Question 1027221
let x be Bob's age
:
7/3 = 84/x
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cross multiply the fractions
:
7x = 252
:
x = 36
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Bob is 36 years old
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Their current total is 120, let y be "in how many years"
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(84+y) + (36+y) = 126
:
2y + 120 = 126
:
2y = 6
:
y = 3
:
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In 3 years the total of their ages will be 126
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