Fanny has 3 times as many pens as Jade. Jade has
27 as many pens as Min. If the three of them have a total of 90 pens, how many pens does Min have?
Fanny |
Jade |
Min |
3x2 |
1x2 |
|
|
2x1 |
7x1 |
6 u |
2 u |
7 u |
The number of pens that Jade has is repeated. Make the number of pens that Jade has the same. LCM of 1 and 2 is 2.
Total number of pens that the three of them have
= 6 u + 2 u + 7 u
= 15 u
15 u = 90
1 u = 90 ÷ 15 = 6
Number of pens that Min has
= 7 u
= 7 x 6
= 42
Answer(s): 42