Question
Out of four numbers the average of the first three is 16
and that of the last three is 15. If the last number is 20 then the first number isSolution
Let three numbers be a, b and c respectively ∴ a + b + c = 16 × 3 = 48 ….(i) b + c + 20 = 15 × 3 = 45 b + c = 45 – 20 = 25 …..(ii) By equation (i) – (ii) a = 48 – 25 = 23
?% of (136.31 ÷ 16.97 × 75.011) = 179.98
 (3/5) of 3025 + (18² + 12²) = ? + 22.22% of 1125
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.)...
- √81.45 + √225.60 + 49.89% of (520.43 + 22.13% of 131.45) = ?
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.)...
44.87% of (39.85 × ?) – 1520.88 0.51 = 1400.8
? 2 + (39.99 × 10.99 + 7.01) - (39.99 × 2.99 2 + 21.99) = 21.99 × 23.01
A train takes 8 seconds to pass a dog running in the opposite direction to the train at a speed of 10 m/s. Given that the train i...
- 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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