PSLEThere are some stickers in albums J and K. 80% of the stickers in album J and 25% of the stickers in album K are round stickers. There is an equal number of square stickers in both albums. If there are 77 more round stickers in album J than in album K, how many stickers are there in both albums altogether?
J |
K |
Round |
Square |
Round |
Square |
4x3 |
1x3 |
1 |
3 |
12 u |
3 u |
1 u |
3 u |
25% =
25100 =
1480% =
80100 =
45The 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 round stickers in Album J than Album K
= 12 u - 1 u
= 11 u
11 u = 77
1 u = 77 ÷ 11 = 7
Number of stickers in both albums
= 12 u + 3 u + 1 u + 3 u
= 19 u
= 19 x 7
= 133
Answer(s): 133