Jaslyn has 3 times as many pens as Fanny. Fanny has
57 as many pens as Kylie. If the three of them have a total of 243 pens, how many pens does Jaslyn have?
Jaslyn |
Fanny |
Kylie |
3x5 |
1x5 |
|
|
5x1 |
7x1 |
15 u |
5 u |
7 u |
The number of pens that Fanny has is repeated. Make the number of pens that Fanny has the same. LCM of 1 and 5 is 5.
Total number of pens that the three of them have
= 15 u + 5 u + 7 u
= 27 u
27 u = 243
1 u = 243 ÷ 27 = 9
Number of pens that Jaslyn has
= 15 u
= 15 x 9
= 135
Answer(s): 135