Question
The average of a set of 's' numbers is 24. If 40 is
added to the set, then the average of the set becomes 24.4. Find the value of '4 X (s - 14)'.Solution
Sum of all 's' numbers = 24s
ATQ:
(24s + 40) / (s + 1) = 24.4
Multiplying both sides by (s + 1):
24s + 40 = 24.4(s + 1)
Simplifying:
24s + 40 = 24.4s + 24.4
15.6 = 0.4s
s = 39
Noe,4 X (s - 14):
4 X (39 - 14) = 100
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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