Mike, Jim and Bob are all professional fisherman. Mike can catch 21 fish in one hour, Jim can catch twice as much and Bob can catch 50% more than Jim. If the three started to fish together and after 40 minutes Mike and Bob left, how many fish did the three fishermen catch in one hour?	Choices.
A) 64. B) 72. C) 86 D) 98 E) 112
We are given   Rate of catching the fish for all three people   M - 21 fish/hour   J - 42 fish/hour   B - 63 fish/hour.   So in 1 hour, if they work together they can catch - 126 fish.   It is given they work together for first 40 min,   So by then they will have caught 2/3 * 128 = 84   Last 20 mins J will work alone and he can catch   1/3*42= 
<gadget id="calculator">  1/3*42</gadget>
<output>14</output>
14 in the remaining 20 mins, thus the total fishes they will catch in one hour= 84+14= 
<gadget id="calculator">84+14</gadget>
<output>98</output>
98   ANSWER:98
<result>D</result>
Mike, Jim and Bob are all professional fisherman. Mike can catch 21 fish in one hour, Jim can catch twice as much and Bob can catch 50% more than Jim. If the three started to fish together and after 40 minutes Mike and Bob left, how many fish did the three fishermen catch in one hour?