Percentage

If $a : b = 2 : 3$ and $b : c = 5 : 7$, then find the ratio $c : a$....

Calculate the value of the expression: $$4^3 - 0^2 + \left( \frac{22}{2} \right)^2 - 8 + 7 \times 6$$...

If the average age of three persons is $56$ years and their ages are in the ratio $2 : 5 : 7$, then find the age of the ...

By how much is 60\% of 75 greater than $\frac{1}{5}$ of 25?...

On the occasion of Republic Day, a retail store offers a discount of 26\% on the total purchase amount. If Manish buys i...

Rani and Adya, working separately, can finish a task in 12 days and 16 days, respectively. They work in stretches of one...

The population of a place increased to 50,000 from 2016 to 2018 at a rate of 6\% per annum, and this growth rate continu...

A light bulb working on a 18 V battery draws a current of 3 A. What will be the resistance of the bulb?...

Anil and Beena are friends, and the difference between their ages is $5$ years. Anil’s father Dinesh is three times as o...

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation:...

If $+$ means $-$, $-$ means $\times$, $\times$ means $\div$, and $\div$ means $+$, what will be the value of the followi...

A rectangular park is $120 \text{ m}$ long and $104 \text{ m}$ wide. A $1\text{-m}$ wide path runs along the boundary of...

A man can row $10 \text{ km/h}$ in still water. When the river is running at a speed of $4.5 \text{ km/h}$, it takes him...

The ratio of the incomes of two employees is $7 : 4$, and the ratio of their expenditures is $3 : 1$. Each of them manag...

Find the value of the expression: $$30 - \left[40 - \left\{56 - (25 - 13 - 12)\right\}\right]$$...

A basket contains 350 eggs. If 12\% of the eggs are rotten, how many eggs are good enough to be sold?...

A, B and C did certain investments and the ratio of their time periods is $3:2:7$ respectively. The ratio of the profits...

Two numbers are, respectively, 10\% and 25\% more than the third number. What is the ratio of the two numbers?...

There are three taps of diameter $2 \text{ cm}$, $3 \text{ cm}$, and $4 \text{ cm}$, respectively. The ratio of the wate...

If $+$ means $-$, $-$ means $\times$, $\times$ means $\div$, and $\div$ means $+$, what will be the value of the followi...

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation:...

Two candidates contested an election. One of them got 64\% of the votes and won by 434 votes. What was the total number ...

There are two inlets A and B connected to a tank. A and B can fill the tank in 32 hours and 28 hours, respectively. If b...

Find the value of the expression: $$\left[76 - \left\{ \frac{90}{5} \times \left(24 - \frac{36}{3} \right) \div 3 \righ...

The number $2918245$ is divisible by which of the following numbers?...

Rewa has some hens and some goats. If the total number of animal heads is 100 and the total number of animal feet is 348...

The ratio of marks obtained by Rajesh, Rakesh, and Ramesh in an exam is $2 : 4 : 9$. What are the marks obtained by Rake...

The cost of 3 kg of rice is ₹180. The cost of 8 kg of rice is equal to that of 5 kg of pulse. The cost of 15 kg of pulse...

Which of the following is correct about **uniform acceleration**?...

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation:...

If the symbols are replaced as follows: $\div$ means $-$, $-$ means $\times$, $\times$ means $+$, and $+$ means $\div$, ...

The number $1254216$ is divisible by which of the following numbers?...

Mrs. Deepa Devi saves 30\% of her salary. If she receives Rs. 42,000 per month as her salary, what is her monthly expend...

Six years ago, the ratio of ages of A to B was $7 : 5$. After 4 years from now, the ratio of their ages will be $11 : 9$...

A and B can complete a work together in 48 days. A is 4 times as work efficient as B. In how many days can B alone compl...

The ratio of the number of coins of 25 paise, 50 paise, Rs. 2 and Rs. 5 is 5 : 4 : 3 : 1, respectively. If the total amo...

Find the value of the expression: $$3 - (-6) \times \{ -2 - 9 - 3 \} \div 7 \times \{ 1 + (-2)(-1) \}$$...

Simplify the following expression: $$\frac{\sqrt{25 + \sqrt{108 + \sqrt{154 + \sqrt{225}}}}}{\sqrt{16 + 19.25 \times 42...

**If** $+$ means $-$, $-$ means $\times$, $\times$ means $\div$, and $\div$ means $+$, **what will be the value of the f...

Amit ranked 7th from the top and 26th from the bottom in his class. How many students are there in the class?...

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation:...

**If 20\% of (A + B) = 30\% of (A - B), then what percentage of B is equal to A?**...

Working for 10 hours per day, 6 men can build a wall in a certain number of days. By working for how many hours/minutes ...

A goods train 350 m long passes through a tunnel of length 1250 m in 80 seconds. What is the speed of the train?...

P, Q, and R can finish a work in 5 days, 10 days, and 15 days respectively when working alone. P and Q work together on ...

If two LED TVs and one mobile phone cost ₹31,000, while two mobile phones and one LED TV cost ₹35,000, then the value of...

What will be the average kinetic energy per molecule in SI units for an ideal gas at a temperature of $25^ ext{o}C$?...

What will come in the place of the question mark (?) in the following equation if ‘+’ and ‘-’ are interchanged and ‘×’ a...

What will come in the place of the question mark (?) in the following equation if ‘+’ and ‘–’ are interchanged and ‘×’ a...

What will come in the place of the question mark (?) in the following equation if ‘+’ and ‘-’ are interchanged and ‘×’ a...