To find the number of kilograms the pig gained each week, we can solve the equation (18 - 10)x + 30 = 80 for x:
(18 - 10)x + 30 = 80
8x + 30 = 80
Subtracting 30 from both sides:
8x = 50
Dividing both sides by 8:
x = 50/8
Simplifying the fraction:
x = 6.25
Therefore, the pig gained 6.25 kg each week.
The answer is B. 6.25 kg.
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.
How many kilograms did the pig gain each week?
A. 5.75 kg
B. 6.25 kg
C. 6.75 kg
D. 7.25 kg
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