Answer:
$137.5
Step-by-step explanation:
45/100 X 250
= 11250/100 = 112.5
250-112.5 = 137.5
or
100%-45%=55%
55/100X250
=13750/100 = 137.5
The parenthesis should be placed in 310-20/2 x (5 + 13) =130
Answer: 
Step-by-step explanation:
Given: The weight of cement = 3 tons
The weight of bricks = 150 pounds
We know that 
Therefore, 
Now, the total weight of load in truck = 
Hence, the truck's load weigh in total = 6,150 pounds.
Answer:
See below.
Step-by-step explanation:
A. k = 50 * 3.6 = 180.
B. The equation is y = 180/x.
C. When x = 75, y = 180/75
= 2.4.
D. Checking C: 2.4 = 180/75 = 2.4. Correct