PSLEThere are some stickers in albums X and Y. 50% of the stickers in album X and 20% of the stickers in album Y are round stickers. There is an equal number of square stickers in both albums. If there are 36 more round stickers in album X than in album Y, how many stickers are there in both albums altogether?
X |
Y |
Round |
Square |
Round |
Square |
1x4 |
1x4 |
1 |
4 |
4 u |
4 u |
1 u |
4 u |
20% =
20100 =
1550% =
50100 =
12The number of square stickers in both albums is the same. Make the number of square stickers the same. LCM of 1 and 4 is 4.
Number of more round stickers in Album X than Album Y
= 4 u - 1 u
= 3 u
3 u = 36
1 u = 36 ÷ 3 = 12
Number of stickers in both albums
= 4 u + 4 u + 1 u + 4 u
= 13 u
= 13 x 12
= 156
Answer(s): 156