Fanny has 4 times as many buttons as Betty. Betty has
58 as many buttons as Zoe. If the three of them have a total of 297 buttons, how many buttons does Fanny have?
Fanny |
Betty |
Zoe |
4x5 |
1x5 |
|
|
5x1 |
8x1 |
20 u |
5 u |
8 u |
The number of buttons that Betty has is repeated. Make the number of buttons that Betty has the same. LCM of 1 and 5 is 5.
Total number of buttons that the three of them have
= 20 u + 5 u + 8 u
= 33 u
33 u = 297
1 u = 297 ÷ 33 = 9
Number of buttons that Fanny has
= 20 u
= 20 x 9
= 180
Answer(s): 180