At the farm, the pig population increased by 20% in the second month and then by a further 10% in the next 4 months. If there were 1056 pigs in the end, how many pigs were there at the farm at first?
| |
Pigs |
| Before |
100% |
| Change 1 |
+ 20% |
| After 1 |
120% |
| Change 2 |
+ 12% |
| After 2 |
132% |
Population of pigs at first = 100%
New population of pigs after first increase
= 100% + 20%
= 120%
Percentage of second increase
= 10% x 120%
=
10100 x 120%
= 12%
New population of pigs after second increase
= 120% + 12%
= 132%
132% of pig population = 1056
1% of the pig population
= 1056 ÷ 132
= 8
100% of pig population
= 100 x 8
= 800
Number of pigs at first = 800
Answer(s): 800
