Question

Maryna spent 1/5 of her money on a book, If she had $80 left after she bought the book, how much money did she have originally

Answer 1

Answer:$400

Step-by-step explanation:

Because, if she spent ONLY 1/5 of her money, and she has $80 left, wouldn't you basically have to multiply 5 with 80 to get the original amount of money?

Answer 2

Answer:

$100

Step-by-step explanation:

If Maryna had $80 after spending 1/5, we know she has 4/5 left. Then, we divide 80 by 4/5. To divide a fraction, we multiply the number by rhe reciprocal. So, we multiply 80/1 by 5/4. 80 multiplied by 5 is 400, and divided by 4 is 100. This is how we get an original amount of $100.