The speed of a boat in still water is 5 km/hr and speed of current is 3 km/hr. If time taken to cover a certain distance upstream is 12 hours, then how long will the boat take to cover the same distance downstream?
Total distance = 12 × (5 – 3) = 24 km Required time = 24/(5 + 8) = 3 hrs
[4(2/3) + 5(1/6)] × 45% of 240 = ?
The value of ((0.27)2-(0.13)2) / (0.27 + 0.13) is:
Simplify-
x + 3(y + x – 2) – (x + y).
125% of 80 – 6 × 4 = ? × 13 – 54
144 (1/2) × 14 – 28 = 7 × ?
34 × 5 × 2 ÷ 6 + 7 × 5 + 13 = (?)× 6 – 754
15% of 2400 + (√ 484 – √ 256) = ?
375% of 320 - 80% of 40 ÷ √256 = ?
√1444 + √729 – √2116 = ?
