Question

The vet said Lucy's cat Mitten weighs 7 2/7 pounds. This is 1 4/7 pounds more than Mittens weighed last year. How much did Mitten weigh last year?

Answer 1

In order to find the weight of Mitten last year, we just need to subtract its current weight and the amount it increased.

So we have that:

`\begin{gathered} 7(2)/(7)-1(4)/(7)=7+(2)/(7)-(1+(4)/(7)) \\ =7+(2)/(7)-1-(4)/(7)=6-(2)/(7)=5+1-(2)/(7)=5+(7)/(7)-(2)/(7)=5+(5)/(7)=5(5)/(7) \end{gathered}`

So Mitten's weight last year was 5 5/7 pounds.