Question

John stitches a trouser in 4 hours while Jack needs 3 hour for the same job. If they both have to sa(d) 15 days 0trousers, then calculate the time taken by them.(a) 22 hours(b) 24 hours (c) 26 hours (d) 28 hoursMadhumina needs 10 days for an embroidery work while Sadhna needs 15 days to complete the same.Madhumina started the work and after 4 days she gave it to Sadhna. How long will Sadhna take tocomplete the work'A' alone can do a piece of work in 6 days and 'B' alone in 8 days. 'A' and 'B' undertook it for 3200. Withthe help of 'C', they completed the work in 3 days. How much is to be paid to C?(a) 375D (b) 400 D (c) 600 (d) 38000'A' can lay railway track between two given stations in 16 days and 'B' can do the same job in 12 days,with the help of 'C', they did the job in 4 days only. Then, 'C' alone can do the job ​

Answer 1

First he has to decide on a pair of pants and he has 4 different choices.

For each of those choices he has a choice of 7 different shirts, so that gives him 4 times 7 = 28 different pant/shirt combinations. (I hope none of the pants are striped and none of the shirts have polka-dots).

For each those 28 possibilities, he has 5 different ties he could select, so altogether he has 28 times 5 = 140 different outfits, and some of them may be acceptable to wear in public.

It is simply , 4*5*7=140 ways.