Tiffany made 195 scones and croissants. After she gave 0.3 of the scones and 0.4 of the croissants to her students, she was left with an equal number of scones and croissants. How many scones had she left?
| |
Scones |
Croissants |
Before
|
10x3 =
30 u |
5x7 =
35 u |
Change
|
- 3x3 =
- 9 u |
- 2x7 =
- 14 u |
After
|
7x3 =
21 u |
3x7 =
21 u |
Comparing scones and
croissants in the end |
1x21 =
21 u |
1x21 =
21 u |
0.3 =
310 0.4 =
410 =
25 The number of scones and croissants is the same in the end. Make the number of scones and croissants in the end the same. LCM of 7 and 3 and 1 is 21.
Total number of scones and croissants at first
= 30 u + 35 u
= 65 u
65 u = 195
1 u = 195 ÷ 65 = 3
Number of scones that Tiffany had left
= 21 u
= 21 x 3
= 63
Answer(s): 63
