Let's say the amount they both had in March is x.
In April, Isaiah's account increased to x + $210.
Freddie increased his account with 15/100*x = x/20.
The total amount Freddie had in his account in April is x + x/20 = 21x/20
To compare their balances, we equate the amounts: x + $210 = 21x/20
Multiplying both sides by 20: 20x + $4200 = 21x
Subtracting 20x on both sides: $4200 = x. Answer: \boxed{4200}.
In March, Isaiah and Freddie had the same amount of money in their savings accounts. In April, Isaiah deposited $210 into his account. Freddie increased the money in his account by 15%. When they compared their balances, they found that they were still equal.
How much money did they both have in their accounts in March?
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1 answer