5 positive numbers are written on a piece of paper. Sum of first 3 numbers is 60 and ratio of the 4th and the 5th number is 2:3. If difference between the 4th and the 5th number is 12, then find the average of all the numbers.
Given, 4th number:5th number = 2:3 Let, 4th number = 2x 5th number = 3x So, 3x – 2x = 12 Or, x = 12 Required average = {(60 + 12 × 2 + 12 × 3)/5} = (120/5) = 24
If 32x + 1– 3x= 3x + 3– 32, then values of x are:
27% of 250 – 0.02% of 1000 is equal to:
{5% of (20 × 25) + 6% of (30 ×35)} ÷ 11 = ?
(360 - ?)/(25% of 96) = 13
(144 ÷ 4)² × (72 ÷ 12)³ = 12 ×? × (25920 ÷10)
12% of 152 + 12% of 150 = ? of 5
The value of [(3√2+2) × (3√2-2)] of 13 + 15 is:
26 2 – 13% of 400 + (529 ÷ 23 2 ) = ? 2
