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Mandy has some $2 notes.

Keith has some $5 notes.

The ratio of the number of notes Mandy has to the number of notes Keith has is 4:5.

After Mandy spends $416, the ratio of the number of Mandy's notes to the number of Keith's notes becomes 3:7.

How much money does Keith have?

Guest Apr 25, 2017
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Let the amount of money that Mandy has = M

Let the amount of money that Keith has = K

 

M/K = 4/5 and,

[M - 416] /K = 3/7, solve for M, K

M = $896.00  The amount of money that Mandy started with.

K =$1,120 The amount of money that Keith started with.

Guest Apr 25, 2017

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