PSLEThere are some stickers in albums S and T. 90% of the stickers in album S and 25% of the stickers in album T are oval stickers. There is an equal number of round stickers in both albums. If there are 156 more oval stickers in album S than in album T, how many stickers are there in both albums altogether?
S |
T |
Oval |
Round |
Oval |
Round |
9x3 |
1x3 |
1 |
3 |
27 u |
3 u |
1 u |
3 u |
25% =
25100 =
1490% =
90100 =
910The 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 S than Album T
= 27 u - 1 u
= 26 u
26 u = 156
1 u = 156 ÷ 26 = 6
Number of stickers in both albums
= 27 u + 3 u + 1 u + 3 u
= 34 u
= 34 x 6
= 204
Answer(s): 204