1. As the number of pineapple you buy increases, the amount you have to pay increases. How does the number of pineapple vary with the amount to be paid?

A. Directly

C. Jointly

B. Inversely

D. Combined

2. Find the constant of variation if d varies jointly as e and f, if d = 15 when e = 1
and f = 5.

A. 5

C. 3

B. 1

D. 15

3. Given the equation
30 = k ( 10 ) , find k.
40

A. 12

C. 10

B. 120

D. 100

4. Five men can build a hut in 6 days. In how many days can 10 men build the

same hut?

A. 12

C. 6

B. 9

D. 3

5. Which of the following quantities are inversely related?

A. side of a cube and its surface area.

B. diameter of a circle and its circumference.

C. the number of tickets sold and the gross sales.

D. distance traveled by the plane and the fuel left in the tank​