Case bought a 10-week-old pig that weighed 30 kg. At 18 weeks, the pig weighed 80 kg. The equation (18 − 10)x + 30 = 80 can be used to find the number of kg (x) the pig gained each week.

Question

How many kilograms did the pig gain each week?
Responses

Answer 1

To solve the equation (18 − 10)x + 30 = 80, we need to simplify it first.

(18 - 10)x + 30 = 80

(8)x + 30 = 80

8x + 30 = 80

Next, we can isolate the variable x by subtracting 30 from both sides.

8x + 30 - 30 = 80 - 30

8x = 50

Finally, divide both sides of the equation by 8 to solve for x.

8x/8 = 50/8

x = 6.25

Therefore, the pig gained 6.25 kilograms each week.