Yesterday, there were four times as many chickens as geese on a farm. Today, 70 chickens are sold. There are twice as many geese now. Find the total number of geese and chickens on the farm yesterday.
| |
Chickens |
Geese |
Total |
| Before |
4x2 =
8 u |
1x2 =
2 u |
10 u |
| Change |
- 70 |
|
|
| After |
1 u |
2 u |
|
The number of geese at first and in the end remains unchanged. Make the number of geese the same. LCM of 1 and 2 is 2.
Number of chickens sold
= 8 u - 1 u
= 7 u
7 u = 70
1 u = 70 ÷ 7 = 10
Total number of geese and chickens yesterday
= 8 u + 2 u
= 10 u
= 10 x 10
= 100
Answer(s): 100
