Q130
A manufacturer builds a machine which will address 500 envelopes in 8 minutes. He wishes to build another machine so that when both are operating together they will address 500 envelopes in 2 minutes. The equation used to find how many minutes x it would require the second machine to address 500 envelopes alone, is = ?
A.
B.
Answer
C.
D.
Answer: Option B
Solution
Answer: Option B
Solution:
Number of envelopes addressed by first machine in 1 minuteNumber of envelopes addressed by second machine in 1 minute
Number of envelopes addressed by both machine in 1 minute