Mary, Betty and Cathy had a total of 344 stickers. Mary gave
35 of her stickers away. Cathy gave away 5 times as many stickers as Mary and Betty gave away 52 stickers. In the end, they had 184 stickers left. How many stickers did Betty and Cathy have in total in the end?
|
Mary |
Betty |
Cathy |
Total |
Before |
5 u |
? |
? |
344 |
Change |
- 3 u |
- 52 |
- 15 u |
- 160 |
After |
2 u |
? |
184 |
Number of stickers that Cathy gave away
= 5 x 3 u
= 15 u
Number of stickers given away
= 3 u + 52 + 15 u
= 18 u + 52
18 u + 52 = 344 - 184
18 u = 160 - 52
18 u = 108
1 u = 108 ÷ 18 = 6
Number of stickers that Betty and Cathy had in the end
= 184 - 2 u
= 184 - 2 x 6
= 184 - 12
= 172
Answer(s): 172