Question
A boat moving downstream covers a distance of 200km in 5
hrs as long as to cover the same distance upstream it takes 10hrs. What will be the time taken by boat in still water to cover 360km.Solution
Let a boat moving in Downstream speed , (V + S) = 200/5 …..(1) = 40 km/h Upstream speed, (V - S) = 200/10…… (2) = 20 km/h Adding both equations (1) and (2) 2V= 60 km/h V= 30km/h Time in which boat will cover 360km in still water will be = 360/30 = 12 hrs.
?% of (168 ÷ 8 × 20) = 126
20% of 1500 – 75% of 200 = 125% of ?
Find the value of 16 X [(8 - 5) of 12 ÷ 4].
√196 + (0.25 × 144) + 19 = ? + 72
22 * 6 + 45% of 90 + 65% of 180 = ?
52% of 400 + √(?) = 60% of 600 - 25% of 400
(25 × 12 + 30 × 8 – 22 × 10) = ?
What will come in the place of question mark (?) in the given expression?
(240% of 175 ÷ √16) X 6 + 80% of 400 = ?3 + 179 + 42
What will come in the place of question mark (?) in the given expression?
(144 × 16 ÷ 12) × 6 = ?
808 ÷ (128)1/7 + 482 = 4 × ? + 846
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