Question

por favor 8. Si: a/b = 3/5 y además: 3a – b = 124, hallar: "a + b"

Answer 1

Si:  a/b = 3/5
a= 3k   y  b= 5k

3a - b =124
3(3k) - 5k = 124
9k - 5k = 124
4k = 124
k = 31

a = 3k = 3(31) = 93
b = 5k = 5(31) = 155

a + b = 93 + 155 = 248