Jen, Anna and Tammy have 432 marbles. Jen has
45 as many marbles as Anna. Tammy's marbles is
15 of the total number of Jen's and Anna's marbles. How many marbles must Anna give to Tammy so that both Jen and Tammy will have the same number of marbles?
Jen |
Anna |
Tammy |
Total |
5x9 = 45 u |
1x9 = 9 u |
|
4x5 = 20 u |
5x5 = 25 u |
|
|
20 u |
25 u |
9 u |
432 |
Total number of marbles
= 20 u + 25 u + 9 u
= 54 u
54 u = 432
1 u = 432 ÷ 54 = 8
Jen |
Anna |
Tammy |
Total |
20 u |
25 u |
9 u |
432 |
|
- 11 u |
+ 11 u |
|
20 u |
14 u |
20 u |
432 |
Number of marbles that Anna must give to Tammy
= 20 u - 9 u
= 11 u
= 11 x 8
= 88
Answer(s): 88