PSLEThere are some stickers in albums E and F. 50% of the stickers in album E and 25% of the stickers in album F are round stickers. There is an equal number of oval stickers in both albums. If there are 20 more round stickers in album E than in album F, how many stickers are there in both albums altogether?
E |
F |
Round |
Oval |
Round |
Oval |
1x3 |
1x3 |
1 |
3 |
3 u |
3 u |
1 u |
3 u |
25% =
25100 =
1450% =
50100 =
12The number of oval stickers in both albums is the same. Make the number of oval stickers the same. LCM of 1 and 3 is 3.
Number of more round stickers in Album E than Album F
= 3 u - 1 u
= 2 u
2 u = 20
1 u = 20 ÷ 2 = 10
Number of stickers in both albums
= 3 u + 3 u + 1 u + 3 u
= 10 u
= 10 x 10
= 100
Answer(s): 100