Asked by Anonymous


John needs $20 to buy a ticket to a show. He earned 1/4 of the money on Monday, 2/5 on Tuesday and 1/ 10 on
Wednesday. What fraction of the money does John still need to earn?

Answered by edina
you have to find the smallest mutual denominator then calculate what portion of the money is earned already.1/4, 2/5,1/10 4x5=20 - that is also divisible by 10 so no need to multiply by 10 also.. so he earned 1/4 =5/20 on monday, 2/5 = 8/20 on tuesday and 1/10 = 2/20 on wed. that is 5+8+2 =15/20
so he needs 5/20 more (what is $5 out of $20)
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