Question

Working simultaneously and independently at an identical constant rate, 4 machines of a certain type can produce a total of x units of product P in 6 days. How many of these machines, working simultaneously and independently at this constant rate, can produce a total of 3x units of product P in 4 days?A. 24B. 18C. 16D. 12E. 8

Answer 1

Answer:

B. 18

Step-by-step explanation:

x units require: 4×6 = 24 days of job

3x units require: 3×24 = 72 days of job

If to be completed in 4 days,

72/4 = 18 machines will be required