Question
A is cycling at an average speed of 15 km/hr such that
he can reach a certain point at 12 noon. If he cycles at 30 km/hr, then he will reach the destination at 10 a.m. At what speed he should cycle to reach the destination at 11 a.m.Solution
ATQ, A reaches the destination at 12 noon at 15 km/hr and at 10 a.m. at 30 km/hr. Distance = 60 km (calculated using time difference of 2 hours). To reach at 11 a.m., A needs to take 3 hours. Required speed = (60 km/3hr) = 20 km/hr A should cycle at 20 km/hr to reach at 11 a.m.
35Â Â Â Â Â Â Â Â Â Â 36Â Â Â Â Â Â Â Â Â Â 40Â Â Â Â Â Â Â Â Â Â 49Â Â Â Â Â Â Â Â Â Â 65Â Â Â Â Â Â Â Â Â Â ?
...If   20       x      46      147       604        3045
Then, x% of 25 = ?
...10 625 50 125 250 25 ?
...2, 12, 36, 80, ?, 252
69    119    156    ?     199    209
15 , 33 , 71 , 150 , 307 , 625
52 25 27 ? 208 1648
...1400      350       700       175        ?       87.5
...7Â Â Â Â Â 14Â Â Â Â Â 42Â Â Â Â Â 168Â Â Â Â Â Â 840Â Â Â Â Â ?
...729 512 343 216 125 ?
...
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