PSLEThere are some stickers in albums F and G. 90% of the stickers in album F and 20% of the stickers in album G are round stickers. There is an equal number of square stickers in both albums. If there are 210 more round stickers in album F than in album G, how many stickers are there in both albums altogether?
F |
G |
Round |
Square |
Round |
Square |
9x4 |
1x4 |
1 |
4 |
36 u |
4 u |
1 u |
4 u |
20% =
20100 =
1590% =
90100 =
910The 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 F than Album G
= 36 u - 1 u
= 35 u
35 u = 210
1 u = 210 ÷ 35 = 6
Number of stickers in both albums
= 36 u + 4 u + 1 u + 4 u
= 45 u
= 45 x 6
= 270
Answer(s): 270