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
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.
To find the number of kilograms the pig gained each week, we need to solve the equation (18 - 10)x + 30 = 80 for x.
First, simplify the equation: (18 - 10)x + 30 = 80
8x + 30 = 80
Next, subtract 30 from both sides of the equation: 8x + 30 - 30 = 80 - 30
8x = 50
Now, divide both sides of the equation by 8 to isolate x: 8x/8 = 50/8
x = 6.25
The pig gained 6.25 kg each week.
Therefore, the correct answer is B. 6.25 kg.
To find the number of kilograms the pig gained each week, we can use the given equation: (18 - 10)x + 30 = 80.
Let's solve the equation step by step:
First, simplify the equation: 8x + 30 = 80.
Next, subtract 30 from both sides of the equation: 8x = 50.
Then, divide both sides of the equation by 8: x = 50/8.
Simplifying the fraction, we get: x = 6.25.
Therefore, the pig gained 6.25 kilograms each week.
So, the correct answer is B. 6.25 kg.