Tammy and Fanny had an equal number of cards at first. Tammy used
14 of her cards and Fanny used
110 of her cards. They used 63 cards altogether. How many cards did Fanny have in the end?
| |
Tammy |
Fanny |
| Before |
4x5 =
20 u |
10x2 =
20 u |
| Change |
- 1x5 =
- 5 u |
- 1x2 =
- 2 u |
| After |
3x5 =
15 u |
9x2 =
18 u |
The number of cards that Tammy and Fanny each had at first is the same. Make the number of cards that Tammy and Fanny each had at first the same. LCM of 4 and 10 is 20.
Number of cards that Tammy and Fanny used
= 5 u + 2 u
= 7 u
7 u = 63
1 u = 63 ÷ 7 = 9
Number of cards that Fanny had in the end
= 18 u
= 18 x 9
= 162
Answer(s): 162
