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Let the speed of the boat in still water = 40 km/hr And the speed of the current = 3 km/hr Time = 3 hours 8 minutes = 25/8 hrs Downstream speed = 40 + 3 = 43 km/hr Upstream speed = 40 – 3 = 37 km/hr Distance = Downstream speed × Downstream time Distance = [43 × (25/8)] km Upstream time = Distance / Upstream speed Upstream time = [43 × (25/8)]/37 = 3(2/3) hrs
(65% of 120) = 25% of ? - 22
15% of ? = 30% of 320 + 17 ×√676 – 63.5 × 8
115% of 40 + 3 × 4 = ? × 11 – 8
The value of 5³ × 5⁴ × 5² = ?
136% of 560 - 2/7 of 630 + 45% of 420 =?
16 of 25 - 12 of 15 = ? of 5 of 11
(0.1 × 0.2 × 0.3) + (0.3 × 0.4 × 0.5) =?
Find the HCF of 15x2 + 8x – 12, 3x² + x – 2, 3x² - 2x, 9x² - 12x + 4
The value of 0.0486 ÷ 0.002 =