header bg

Scan QR code or get instant email to install app

Question:

Your piggy bank contains $19.75 in dimes and quarters. There are 100 coins in all. How many dimes are there?

A 35
explanation

Let x equal the number of dimes. Then 100 – x represents the number of quarters. There is $0.10x in dimes and $0.25(100 – x) in quarters.
0.10x + 0.25(100 – x) = 19.75
0.10x + 25 – 0.25x = 19.75
–0.15x = –5.25
x = –5.25/–0.15
x = 35

Comments

just now

just now

just now

Leave a Reply

Your email address will not be published.

*