PSLEThere are some stickers in albums M and N. 75% of the stickers in album M and 20% of the stickers in album N are round stickers. There is an equal number of oval stickers in both albums. If there are 187 more round stickers in album M than in album N, how many stickers are there in both albums altogether?
M |
N |
Round |
Oval |
Round |
Oval |
3x4 |
1x4 |
1 |
4 |
12 u |
4 u |
1 u |
4 u |
20% =
20100 =
1575% =
75100 =
34The number of oval stickers in both albums is the same. Make the number of oval stickers the same. LCM of 1 and 4 is 4.
Number of more round stickers in Album M than Album N
= 12 u - 1 u
= 11 u
11 u = 187
1 u = 187 ÷ 11 = 17
Number of stickers in both albums
= 12 u + 4 u + 1 u + 4 u
= 21 u
= 21 x 17
= 357
Answer(s): 357