Fanny has 4 times as many pens as Risa. Risa has
45 as many pens as Nicole. If the three of them have a total of 50 pens, how many pens does Fanny have?
Fanny |
Risa |
Nicole |
4x4 |
1x4 |
|
|
4x1 |
5x1 |
16 u |
4 u |
5 u |
The number of pens that Risa has is repeated. Make the number of pens that Risa has the same. LCM of 1 and 4 is 4.
Total number of pens that the three of them have
= 16 u + 4 u + 5 u
= 25 u
25 u = 50
1 u = 50 ÷ 25 = 2
Number of pens that Fanny has
= 16 u
= 16 x 2
= 32
Answer(s): 32