Henry and Will have some silver notebooks and some red notebooks. The number of red notebooks Henry has is equal to the number of silver notebooks Will has.
34 of Henry's notebooks are silver and
14 of Will's notebooks are red. There are a total of 60 silver notebooks. Find the total number of notebooks they have.
| Henry |
Will |
Total |
| Silver |
Red |
Silver |
Red |
|
| |
1x3 |
1x3 |
|
|
| 3x3 |
1x3 |
3x1 |
1x1 |
|
| 9 u |
3 u |
3 u |
1 u |
16 u |
The number of Henry's red notebooks and Will's silver notebooks is the same.
The number of Henry's red notebooks is repeated. The number of Will's silver notebooks is repeated. Make the number of Henry's red notebooks and Will's silver notebooks the same. LCM of 1 and 4 is 3.
Number of silver notebooks
= 9 u + 3 u
= 12 u
12 u = 60
1 u = 60 ÷ 12 = 5
Total number of notebooks
= 9 u + 3 u + 3 u + 1 u
= 16 u
= 16 x 5
= 80
Answer(s): 80
