Time and Work

While working on an assembly line, a woman worker manufactures 15 bases for an instrument and a man worker fixes 12 super structures per hour. How many men and women are needed to assemble 2400 pieces in a day, if they work for eight hours a day?

A, B and C together can finish a work in 10 days. A alone can do it in 24 days while B can do it in 30 days. A and B work together for 12 days and leave the rest of the work to be completed by C. How many days will C take to do the rest of the work?

A agrees to complete a piece of work in 6 days for Rs.300, but engaging an assistant the work is completed in 4 days. Then the share received by the assistant is:

A does 4/5 of a work in 20 days. He then calls B and they together finish the remaining work in 3 days. How long B alone would take to do the whole work?

A can do a piece of work in 30 days. A and B started doing the work, but midway through it, A fell sick and was absent from work for 3 days. Due to this, they took one more day to complete the work than the scheduled time. In how many days can B alone complete the piece of work?

If 5 boys can do the decoration of whole school in 7 days and 9 boys can check the other arrangements for the party in 12 days, and if all of the 14 boys start working from 19^th July, when will the whole work be finished?

Two persons A and B under take to do a piece of work for Rs. 4800. A could do it alone in 5 days and B could do it alone in 8 days. With the help of C and D they finished it in 3 days. If the alone work of C be twice that of 'D', the share of D is

Anya, Ben, and Clara were paid a total of $520 for organizing supplies at a community health camp. Each was paid in proportion to the number of days he or she worked. If Anya worked 12 days, Ben worked 16 days, and Clara worked 24 days, how much was Ben paid?

Ajay, Bharat, and Chandu can complete a piece of work in 24 days, 30 days, and 32 days, respectively. Ajay and Chandu work on the first day, and Bharat completes the same work the next day. If they work in this way, in how many days can they complete the work?

Mr. X finishes 60% of a work in 9 days, and then is joined by Mr. Y and they together finish the next 10% work in 1 day. How long would it take if Y alone is asked to finish the next 5% of the work?

Kamla can complete a piece of work in 24 days. Nirmala can complete the same work in 18 days. Kamla starts the work alone and works for X days. After that, Nirmala alone finishes the remaining work in Y days, completing the work in a total of 20 days. If X and Y are both positive integers, select the correct option.

Kim is four times as efficient as Kong and Kong is twice as efficient as King. If they take 4 days to complete the work by working together, then how many days does Kim take to complete the whole work alone?

A and B can do a piece of work in 12 and 18 days respectively. They work together for 4 days, after which A leaves. How many more days will B take to finish the remaining work?