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Let the speed of the boy in still water be x kmph. Then, (x + 3) × 6 = (x – 3) × 7 => 6x + 18 = 7x - 21 => x = 39 kmph
15.12 x 12.02 + 16.94 x 6.12 - 18.93 x 8.89 = ? - 25.07
(124.99)² = ?
16.22 × 12.99 + 142.15 = ?
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.)...
? = 28.04² ÷ (4.01⁵ + 9.89 × 20.20) + 84.56% of (198.76 × 30.03)
( 14.99% of 549.99 ) × 17.02 = ? 2 + 26.02 × 3200 ÷ 800
{26.11 x 13.96 - (346.95 - 26.04 x 4.18)} = ?