AskQ logo

STUCK ON HOMEWORK?

ASK FOR HELP FROM OUR KIASUPARENTS.COM COMMUNITY!

Question

Jeff’s mother gave him some money. He used an equal amount of money each day. At the end of the 7th day, he was left with 1/4 of how much he had at first. At the end of the 9th day, he was left with $10. How much did Jeff receive from his mother? Please help for Primary 5 formula answer, thanks.

Answer

If Jeff used $ 3u everyday, on the seventh day, he had used in total $ 21u   , and this amount was 3/4 of the money that his mother gave him in the beginning.  

So he received from his mother in total $ 21u × 4/3 = $ 28u 

On the ninth day, he spent $ 3u  × 9 = $ 27u

Given

28u – 27u = 10

u = 10

28u = 280

$ 280 was received.

1 Reply 2 Likes ✔Accepted Answer

Thank you 👍✨️🙏

0 Replies 0 Likes