Four engineers can complete a task in 5 hours. Assuming the rate of work remains constant, six engineers will complete the task in: a. 7 h 30 min
b. 4 h 48 min
c. 126 h
d. 3 h 20 min​

Option (a) is correct.

Step-by-step explanation:

Given that,

Four engineers can complete a task in 5 hours i.e.

4 engineer = 5h

1 engineer = (5/4) h

Assuming the rate of work remains constant,

6 engineer =

= 7.5 hours

or

= 7 hours 30 minutes

Hence, six engineers will complete the task in 7 h 30 min.

step-by-step explanation:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!