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A single machine can produce 1 unit in 6 min.how many such machines work together if 1450 units are produced from 10am to 12pm? option (58,32,27,14)

24 men works for 14 days, 2 days after they started working, 4 more men joined them and after 2 more days, 6 men left. How many more days will they now take to complete the remaining work?

24 men can do a work in x days and 32 women can do the same work in (x+8)days.the ratio of work done by 15 men and 12 women in the same time is 3:1,find value of x? ( ans 10) ?

number of days taken by 1 man to complete the same work is less than by number od days taken by 1 women to do this work? (ans 336)?

On a journey across munbai,a taxi average 20mph for 76% of distance,25 mph for 10% of distance and 8 mph for remainder.then average speed of whole journey is?