It takes Gabriella seven hours to harvest a field. Huong can harvest the same field in
nine hours. If they worked together how
long would it take them?
A) 4.93 hours B) 3.94 hours C) 3.39 hours
D) 5.07 hours

B

Step-by-step explanation:

Gabriella's one hour work=1/7

Huong's one hour work=1/9

one hour work of both=1/7+1/9=(9+7)/63=16/63 th

so they can harvest the same field in time=63/16=3.9375 hours≈3.94 hours.

B

is it 35

step-by-step explanation:

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.