A certain number of men can complete a work in 50 days. If 10 more men are added, the work can be completed in 40 days. Find the original number of men.
ATQ, Let the original number of men be x. x men × 50 days = (x + 10) men × 40 days Solving for x, we get: 50x = 40(x + 10) 50x = 40x + 400 10x = 400 x = 40
7, 14, 42, 210, 1470, ?
1240 600 ? 140 90 25
...The following numbers form a series followed by a (?). Find the odd one out first and then find that what will come in place of the question mark (?) ac...
29 46 65 88 ? 148
43 36 50 29 ? 22
...12 3 15 ? 153 756
...7 7 14 42 ? 840
...4 , 3, 4 , ? , 32
342 252 172 102 42 ?
35.25 71 146 296 624 1376
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