Question
Speed of a boat in still water is 48 km/h and the speed
of stream is 25% of the speed of boat in still water. If the time taken by boat to cover a distance 'D' km in downstream is 2 hours less than the time taken by boat to cover the same distance in upstream, then find the value of 'D'.Solution
Speed of stream = 0.25 X 48 = 12 km/h Upstream speed = 48 - 12 = 36 km/h Downstream speed = 48 + 12 = 60 km/h ATQ: We have, (D/36) - (D/60) = 2 Or, (5D - 3D) ÷ 180 = 2 Or, 2D = 360 So, 'D' = 180 Therefore, the value of 'D' is 180.
What value should come in place of the question mark (?) in the following question?
2048 ÷ 16 + 256 × 2 − 180
...√529 * 5 – 15% of 220 + ? = 120% of 160
What is 12% of 4% of 7% of 2 x 106 ?
(60/15) × 25 + 15 2 – 18% of 200 = ? 2
- What will come in place of (?), in the given expression.
144 ÷ √36 + 13² – 100 = ? The alarms of two alarm clocks sound at regular intervals of 72 seconds and 80 seconds. If they beep together for the first time at 6:00 am, at what tim...
What will come in the place of question mark (?) in the given expression?Â
What will come in the place of question mark (?) in the given expression?
(? ÷ 16) = (20 ÷ ?) X 20
15(2/9) + 11(2/9) + 17(1/9) + 13(4/9) = ?
Relevant for Exams:
