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ATQ, Let the speed of the current be 'p' km/hr Therefore, speed of the boat in still water = 1.5p km/hr According to the question, 90/(1.5p – p) = 22.5 Or, 0.5p = 4 Or, p = 8 km/hr Therefore, speed of current = p = 8 km/hr Therefore, speed of boat in still water = 1.5p = 12 km/hr According to the question, New speed of the current = (8 + 4) = 12 km/hr Therefore, downstream speed of the boat = 12 + 12 = 24 km/hr Downstream distance covered in 5 hours = 24 × 5 = 120 km
1000÷ 250 = ( 3√? × √1444) ÷ ( 3√512 × √361)
1540 ÷ 7 - 184 ÷ 8 = ?
12.232 + 29.98% of 539.99 = ? × 5.99
√256 * 3 – 15% of 300 + ? = 150% of 160
18 × 15 + 86 – 58 =? + 38
[5 X {(52 X 5) - 10} + 50 of 20] = ?
4(1/3) × 2(11/14) = 50% of ? + 86/11
(15 x 6 + 60% of 500 - 16 x 7) = ?
25% of 140 + 2 × 8 = ? + 9 × 5
If a nine-digit number 389x6378y is divisible by 72, then the value of √(6x + 7y) will be∶