Question
The average of five even numbers is 62. If we replace
two of these even numbers, 84 and 92, with a single even number X, the new average decreases by 4. What is the value of X?Solution
Sum of 5 even numbers = 5 x 62 = 310 Sum of after 2 replacing even numbers by X = 310 - (84 + 92) + X = 310 - 176 + X Now Sum of 4 even numbers = (62 - 4) x 4 = 232 According the question, we get 310 – 176 + X = 232 X = 232 – 310 + 176 X = 98
[(√ 529) + 67] x 5 = ?
7(1/7)% of 3500 + 6(2/3) % of 6000 = ? + 552.5
5 + 2 × 3 ÷ (3 × 2) ÷ 4
√? × 4 - 374 + 127 + 300 = 117
What value should come in place of the question mark (?) in the following question?
15 × 19 – 13 × 5 = 122 ...
Find the simplified value of the given expression:
(125 - 75 ÷ 3 of 5) ÷ 2 + 4 of 12 ÷ 3 - 16 of 5 ÷ 20
9 × 40 × 242 × 182 = ?2
(2 ÷ 3) × (4 ÷ 12) × (? ÷ 10) × 45 × (1 ÷ 5) = (? ÷ 6) + (2 ÷ 5)
What will come in the place of question mark (?) in the given expression?
(437 + ? - 167) x 2.5 = 875Determine the value of ‘a’ if a = √529 + √1444
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