Average age of 25 students is 15 years. If 5 students leave the class, the average age decreases by 1 year. Find the average age of the students who left the class.
ATQ, Total age of 25 students = 25 × 15 years = 375 years. New average age after 5 students leave = 14 years. Total age of 20 students = 20 × 14 years = 280 years. Total age of the 5 students who left = 375 − 280 years = 95 years. Average age of the 5 students who left = 95/5 years = 19 years.
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
