Question
The average age of 22 girls is 40 years. If the age of
two more girls is added the average decreases by 2.5 years. What is the sum of the age of new girls?Solution
Total age of 22 girls = 22 × 40 = 880 years If the age of two more girls is added the average decreases by 2.5 years, ∴ Total age of 24 girls = 37.5 × 24 = 900 Now, the sum of the age of new girls = 900 – 880 = 20 years
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
A salesman is allowed 32% commission on the total sales by him and a bonus of 3% on the sales over Rs. 15000. If the total earnings of a salesman is Rs....
(2310.23 ÷ 32.98) + (1008.32 ÷ 23.9) + 1594.11 = ?
Solve the given equation for ?. Find the approximate value.
(3/5 of 399.78 + 7/9 of 360.15) ÷ (√63.94 + 25% of 383.94) = ?
...- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
? = 49.99² ÷ (1.98⁵ + 8.01 × 89.91) + 75.15% of (263.89 × 49.11)
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
Solve the following expression and calculate the approximate value.
398% of 388 + 129% of 323.89 – 430.93
30.11% of 149.99 + √ 143.97 ÷ 12.02 = ?
(74.76 ÷ 12.11 X ?)% of 239.89 = 600.19
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