Question
The average age of 21 girls is 43 years. If the age of
two more girls is added the average decreases by three years. What is the sum of the age of new girls?Solution
Total age of 21 girls = 21 × 43 = 903 years If the age of two more girls is added the average decreases by three years, ∴ Total age of 23 girls = 40 × 23 = 920 Now, the sum of the age of new girls = 920 – 903 = 17 years
564.932 + 849.029 – 425.08 = 612.095 + ?
999.99 + 99.99 + 99= ?
A sum of ₹60,000 is invested at a compound interest rate of 'x%' per annum, compounded annually, and grows to ₹75,264 in 2 ye...
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.)...
³√? × 33.97 + 59.99 × 28.9 – 48.98 × 21.42 = 1085.344
1279.98 ÷ 40.48 × 10.12 = ? × 2.16
(124.901) × (11.93) + 219.95 = ? + 114.891 × 13.90
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.)...
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