Abi made 322 croissants and puffs. After she gave 0.1 of the croissants and 0.75 of the puffs to her pupils, she was left with an equal number of croissants and puffs. How many puffs had she left?
| |
Croissants |
Puffs |
Before
|
10x1 =
10 u |
4x9 =
36 u |
Change
|
- 1x1 =
- 1 u |
- 3x9 =
- 27 u |
After
|
9x1 =
9 u |
1x9 =
9 u |
Comparing croissants and
puffs in the end |
1x9 =
9 u |
1x9 =
9 u |
0.1 =
110 0.75 =
75100 =
34 The number of croissants and puffs is the same in the end. Make the number of croissants and puffs in the end the same. LCM of 9 and 1 and 1 is 9.
Total number of croissants and puffs at first
= 10 u + 36 u
= 46 u
46 u = 322
1 u = 322 ÷ 46 = 7
Number of puffs that Abi had left
= 9 u
= 9 x 7
= 63
Answer(s): 63
