PSLEThere are some stickers in albums T and U. 50% of the stickers in album T and 25% of the stickers in album U are oval stickers. There is an equal number of square stickers in both albums. If there are 18 more oval stickers in album T than in album U, how many stickers are there in both albums altogether?
T |
U |
Oval |
Square |
Oval |
Square |
1x3 |
1x3 |
1 |
3 |
3 u |
3 u |
1 u |
3 u |
25% =
25100 =
1450% =
50100 =
12The number of square stickers in both albums is the same. Make the number of square stickers the same. LCM of 1 and 3 is 3.
Number of more oval stickers in Album T than Album U
= 3 u - 1 u
= 2 u
2 u = 18
1 u = 18 ÷ 2 = 9
Number of stickers in both albums
= 3 u + 3 u + 1 u + 3 u
= 10 u
= 10 x 9
= 90
Answer(s): 90