Tiffany, Zara, Ivan and Jade shared some pens. Tiffany and Zara took
13 of the total number of pens while Ivan and Jade took the rest. Zara had twice as many pens as Tiffany and Jade had 36 pens. Given that Jade had twice as many pens as Zara, how many pens were there altogether?
Tiffany |
Zara |
Ivan |
Jade |
Total |
1x3 |
2x3 |
3x3 |
1 |
2 |
|
|
|
|
1x2 |
|
2x2 |
|
1 u |
2 u |
2 u |
4 u |
9 u |
Number of pens that Zara had is repeated. Make the number of pens that Zara had the same. LCM of 2 and 1 is 2.
Number of pens that Jade had = 4 u
4 u = 36
1 u = 36 ÷ 4 = 9
Total number of pens
= 9 u
= 9 x 9
= 81
Answer(s): 81