Tina baked a total of 302 muffins and macarons. After giving away 90% of the macarons and 80% of the muffins, she was left with four times as many macarons as muffins. Find the number of muffins Tina gave away.
| |
Macarons |
Muffins |
| Before |
10x4 =
40 u
|
5 u |
| Change |
- 9x4 =
36 u |
- 4 u |
| After |
1x4 =
4 u |
1 u |
Comparing macarons and
muffins in the end |
4x1 =
4 u |
1x1 =
1 u |
90% =
90100 =
91080% =
80100 =
45The number of macarons in the end is the repeated identity. Make the number of macarons in the end the same. LCM of 1 and 4 is 4.
Total number of pastries at first
= 40 u + 5 u
= 45 u
45 u = 302
1 u = 302 ÷ 45 = 10
Number of muffins that Tina gave away
= 4 u
= 4 x 10
= 40
Answer(s): 40
