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Question

Hi ,

Pls help .

David and Eric had an equal amount of money at first . Every month,David spent $850 and Eric spent $912 . After a few months, David was left with $1550 while Eric had 4/5 of the money David had left . How much did Eric have at first ?

thank u !

Fly2High 

 

Source: St Hilda’s Primary

Answer

Let n be the number of months passed.

850n + 1550 = 912n + 4/5(1550)

62n = 310

n = 5

So Eric has 912(5) + 4/5(1550) = $5800 at first.

Can also use David’s equation too.

1 Reply 1 Like ✔Accepted Answer

Thanks a lot !!

0 Replies 1 Like
post-17001

This is for the “model drawing” die hard fans.

Algebra will be a faster and easier method.

0 Replies 2 Likes