jack and jill took 115 by 11 min and 94 by 7 respectively to complete an assignment.who completed the assignment faster?by how much time
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Answer:
JACK = 115/11 min= 10 5/11 min
JILL = 94/7 min = 13 3/7 min
JAcK is faster
by
94/7 - 115/11
=[-115 x7 + 11 x 94]/77
=[-805 + 1034]/77 mins
= 229/ 77 min
= 2 75/77 min
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