Aunt Abi made 70 less biscuits than macarons. After she gave 0.7 of the biscuits and
25 of the macarons to Lynn, she was left with 63 less biscuits than macarons. How many macarons did she make?
| |
Biscuits |
Macarons |
Comparing biscuits
and macarons at first |
|
70 more |
Before |
10 u |
5x2 + 70 =
10 u + 70 |
Change |
- 7 u |
- 2x2 - 28 =
- 4 u - 28
|
After |
3 u |
3x2 + 42 =
6 u + 42 |
Comparing biscuits
and macarons in the end |
|
63 more |
0.7 =
710 25 x 70 = 28
Number of macarons that Aunt Abi gave to Lynn = 4 u + 28
If Aunt Abi made another 63 biscuits in the end, the number of biscuits and macarons in the end would be the same.
6 u + 42 = 3 u + 63
6 u - 3 u = 63 - 42
3 u = 21
1 u = 21 ÷ 3 = 7
Number of macarons that Aunt Abi made
= 10 u + 70
= 10 x 7 + 70
= 70 + 70
= 140
Answer(s): 140
