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The sum of the ages of Nate and Cristina is 90 years. 10 years ago, Nate's age was 4 times Cristina's age. How old is Nate now?

Solution

The sum of the ages of Nate and Cristina is 90 years. 10 years ago, Nate's age was 4 times Cristina's age. How old is Nate now?

Solution

Nate^{'} s age is : 66

Solution steps

Translate the problem into an equation:

x - 10 = 4 (90 - x - 10)

Solve for

x, x - 10 = 4 (90 - x - 10) : x = 66

Nate^{'} s age is : 66

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