Hilda baked 120 wafers.
35 of the wafers were mocha wafers. The rest were cherry wafers. She gave an equal number of mocha wafers and cherry wafers away and had 4 times as many mocha wafers as cherry wafers left. How many wafers did she give away?
| |
Mocha wafers |
Cherry wafers |
Difference |
| Before |
3x3 =
9 u |
2x3 =
6 u |
1x3 =
3 u |
| Change |
- 5 u |
- 5 u |
|
| After |
4x1 =
4 u |
1x1 =
1 u |
3x1 =
3 u |
Since Hilda gave away an equal number of mocha wafers and cherry wafers, the difference in the number of mocha wafers and cherry wafers remains unchanged. Make the difference in the mocha wafers and cherry wafers the same. LCM of 1 and 3 is 3.
Total number of wafers at first
= 9 u + 6 u
= 15 u
15 u = 120
1 u = 120 ÷ 15 = 8
Number of wafers that Hilda gave away
= 5 u + 5 u
= 10 u
= 10 x 8
= 80
Answer(s): 80
