PSLEThere are some stickers in albums W and X. 80% of the stickers in album W and 25% of the stickers in album X are oval stickers. There is an equal number of round stickers in both albums. If there are 66 more oval stickers in album W than in album X, how many stickers are there in both albums altogether?
W |
X |
Oval |
Round |
Oval |
Round |
4x3 |
1x3 |
1 |
3 |
12 u |
3 u |
1 u |
3 u |
25% =
25100 =
1480% =
80100 =
45The number of round stickers in both albums is the same. Make the number of round stickers the same. LCM of 1 and 3 is 3.
Number of more oval stickers in Album W than Album X
= 12 u - 1 u
= 11 u
11 u = 66
1 u = 66 ÷ 11 = 6
Number of stickers in both albums
= 12 u + 3 u + 1 u + 3 u
= 19 u
= 19 x 6
= 114
Answer(s): 114