A machine can stamp 20 envelopes in 4 minutes. How many of these machines, working simultaneously, are needed to stamp 60 envelopes per minute?A12B10C8D5SUBMIT

A & B working together can do a job in 30 days. They worked only for 20 days and the rest job is done by A in next 20 days. In how many days A can do the complete job individually?

12 men can complete any work in 36 days. 18 women can complete the same piece of work in 60 days. 8 men and 20 women work together for 20 days. If only the women were to complete the remaining work in 4 days, then how many women would be required? 60 74 68 70

elect the correct answerA, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day?Options15 days12 days16 days18 days

9. Three people A, B, and C are working in a factory. A and B working together can finish a task in 18 days whereas B and C working together can do the same task in 24 days and A and C working together can do it in 36 days. In how many days will A, B, and C finish the task working together ?*16201525

Working at the same constant rate, three identical machines can produce a total of  widgets per minute. At this rate, how many widgets could 8 such machines produce in 5 minutes?