Question

Lily makes $6.35 using only 5 cent coins.
How many 5 cent coins does she need?

Answer 1

Answer:

127

Step-by-step explanation:

To make this easier, all money is written is cents. So the $6.35 is turned into 635 cents. The $0.05 is turned into 5

1. Write an equation. Let m be total money and c be the amount of coins. We know that each coin is worth 0.05 of a dollar. 5c=m
2. Subtitute values. We know that the total amount of money m is 635. 5c=635
3. Isolate the variable (c). Divide both sides by 5, which will make the 5c become c and will make the 635 become 127. c=127
4. Check your work. Plug your answer into the original equation, solve and see if it’s true. 5(127)=635 is simplified into 635=635