Question

1. a/4 = b/5 y a + b = 64

2. x/y = 7/4 Si X – y = 31


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Answer 1

1. a=4K
b=5k
a+b=64
4K+5k=64
9k=64
k=7.1
a=4(k)=28.4
b=5(k)=35.6