At the farm, the turkey population increased by 30% in the second month and then by a further 20% in the next 9 months. If there were 780 turkeys in the end, how many turkeys were there at the farm at first?
|
Turkeys |
Before |
100% |
Change 1 |
+ 30% |
After 1 |
130% |
Change 2 |
+ 26% |
After 2 |
156% |
Population of turkeys at first = 100%
New population of turkeys after first increase
= 100% + 30%
= 130%
Percentage of second increase
= 20% x 130%
=
20100 x 130%
= 26%
New population of turkeys after second increase
= 130% + 26%
= 156%
156% of turkey population = 780
1% of the turkey population
= 780 ÷ 156
= 5
100% of turkey population
= 100 x 5
= 500
Number of turkeys at first = 500
Answer(s): 500