If the ratio of the sum invested and simple interest received after 1 year is 25:7 respectively, then find the rate of interest.
Let the sum invested and simple interest received be Rs.25x and Rs.7x respectively. Let the rate of investment be r% p.a. Therefore, {(25x x 1 x r)/100} = 7x => r = 28%
5 positive numbers are written on a piece of paper. Sum of first 3 numbers is 30 and ratio of the 4th and the 5th number is 2:3. If difference between t...
Find the average of the cubes of the first 7 natural numbers.
In a kilometre race, A beats B by 30 metres or 6 seconds. Find the time taken by A to finish the race?
(5.53 – 4.07) 2/(4.07 – 3.15)(3.15 – 5.53) + (4.07 – 5.53) 2/(3.15 – 5.53)(5.53 – 4.07) + (3.15 – 5.53) 2
In a two digit positive number, the digit in the unit’s place is equal to the square of the digit in ten’s place, and the difference between...
The sum of four consecutive counting numbers is 154. Find the smallest number?
In a tennis tournament, each player played one game with all the other players. How many players participated in the tournament if they played 300 games...
Find the third proportion of 22 and 11.
For a data set value of median and mean are respectively 8 and 5, then find the value of mode?
Find the third proportion of 24 and 12.
