+0  
 
0
48
1
avatar

Jack's mother spent $18 on some English assessment books. She spent 7/12 of her remaining money on some Chinese storybooks. Given that she was left with 1/3 of her original sum of money, how much money did Jack's mother spend on the Chinese storybooks?

 May 19, 2022
 #1
avatar
0

Let the amount of money she started with==M

M - 18 - what she had left after buying some English books.

 

5/12[M - 18] - what she had left after buying  some Chinese books

 

5/12[M - 18] ==1/3M, solve for M

 

M ==$90 - amount of money she started with

7/12[90 - 18] ==$42 - she spent buying Chinese books.

 May 19, 2022

19 Online Users

avatar
avatar