Eva, Mary, Jenson and Risa shared some cards. Eva and Mary took
16 of the total number of cards while Jenson and Risa took the rest. Mary had four times as many cards as Eva and Risa had 56 cards. Given that Risa had twice as many cards as Mary, how many cards were there altogether?
Eva |
Mary |
Jenson |
Risa |
Total |
1x5 |
5x5 |
6x5 |
1 |
4 |
|
|
|
|
1x4 |
|
2x4 |
|
1 u |
4 u |
17 u |
8 u |
30 u |
Number of cards that Mary had is repeated. Make the number of cards that Mary had the same. LCM of 4 and 1 is 4.
Number of cards that Risa had = 8 u
8 u = 56
1 u = 56 ÷ 8 = 7
Total number of cards
= 30 u
= 30 x 7
= 210
Answer(s): 210