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Mai started a new exercise program. On the second day, she walked 5 minutes more than on the first day. On the third day, she increased her walking time from day 2 by 20% and walked for 42 minutes.

How many minutes did she walk on the first day?

Answer :

Mai ran for 30 minutes on the first day.

Let's solve the problem step by step.

We are given that on the second day, Mai walked 5 minutes more than on the first day. Let's denote the walking time on the first day as 'x'. Therefore, on the second day, her walking time would be 'x + 5' minutes.

On the third day, Mai increased her walking time from day 2 by 20% and walked for 42 minutes. We can set up the equation: (x + 5) + 0.2(x + 5) = 42.

Simplifying the equation, we get 1.2x + 6 = 42.

Subtracting 6 from both sides, we have 1.2x = 36.

Dividing both sides by 1.2, we find x = 30.

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