Natalie has 2 times as many pens as Gwen. Gwen has
67 as many pens as Barbara. If the three of them have a total of 100 pens, how many pens does Natalie have?
Natalie |
Gwen |
Barbara |
2x6 |
1x6 |
|
|
6x1 |
7x1 |
12 u |
6 u |
7 u |
The number of pens that Gwen has is repeated. Make the number of pens that Gwen has the same. LCM of 1 and 6 is 6.
Total number of pens that the three of them have
= 12 u + 6 u + 7 u
= 25 u
25 u = 100
1 u = 100 ÷ 25 = 4
Number of pens that Natalie has
= 12 u
= 12 x 4
= 48
Answer(s): 48