Question
In a classroom there are 15 boys and 13 girls. Average
age of each boy and each girl is 21 years and 17 years respectively. The sum of ages of all the boys, girls and a teacher whose age is ‘x’ years is 570 years. Find the value of ‘x’.Solution
Sum of ages of all boys = 15 x 21 = 315 Sum of ages of all girls = 13 x 17 = 221 So, 315 + 221 + x = 570 => x = 34
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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