Question

Macy doesn’t have any money in her bank account, but she saves $12.50 each week. Robby has $20 in his bank account, and he saves $7.50 each week. After how many weeks will Macy and Robby have the same amount in their accounts?

Answer 1

After 4 weeks, Macy and Robby will have same amount in their accounts.

Step-by-step explanation:

Given,

Amount saved by Macy each week = $12.50

Let,

x be the number of weeks.

M(x) = 12.50x

Amount saved by Robby each week = $7.50

Amount Robby already have = $20

R(x) = 7.50x + 20

For same amount;

M(x) = R(x)

$12.50x=7.50x+20\\12.50x-7.50x=20\\5x=20$

Dividing both sides by 5

$\frac{5x}{5}=\frac{20}{5}\\x=4$

After 4 weeks, Macy and Robby will have same amount in their accounts.

Keywords: function, division

Learn more about functions at:

• brainly.com/question/8618791
• brainly.com/question/8799684

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