Answer:
All the members of a construction crew work at the same pace. Four of them working together are able to pour concrete foundations in 32 hours.
Step-by-step explanation:
Food is $6,750
Housing is $5,400
Clothing is $2,700
Savings is $3,000
Taxes is $6,750
And other expenses is $2,400
Let, the cost of a belt = x
cost of a wallet = y
Then, system of equations would be:
x + y = 42
7x + 4y = 213
Multiply 1st equation by 4,
4x + 4y = 168
Substitute it from 2nd equation,
3x = 45
x = 15
Now, substitute it in 1st equation,
15 + y = 42
y = 42 - 15 = 27
In short, Belt costs $15 and wallet costs $27
Hope this helps!
B: Apply the distributive property to get 4x - 12=9
