Thirty men take 20 days to complete a job working 9 hours a day. How many hour a day should 40 men work to complete the job? (a) 8 hrs (b) 7 1/2 hrs (c) 7 hrs (d) 9 hrs35 108674
Use Venn diagrams to answer each of the following questions. You must show your Venn diagram for each problem. 1. A survey of 80 sophomores at a certain western college showed the following: 36 take English ,32 take history 32 take political science 16 take history and English 16 take political science and history ,14 take political science and English 6 take all three How many students: a) take English and neither of the other two? ____________ b) Take none of the three courses? ____________ c) take history, but neither of the other two? ____________ d) take political science and history but not English? ____________ e) do not take political science?13 29496
a dog takes 4 leaps for every 5 leaps of a hare but 3 leaps of a dog are equal to 4 leaps of the hare .compare their speeds(.......... please give explanation....)14 58810
highest power of 25 that divides the product of the first 100 multiples of 5,74,100,621 7242
10 points are chosen on a plane. Every possible pair of points is joined by a line and the midpoint of the line is marked with red colour. What is the minimum possible number points on the plane which have been marked with red colour?4 3808
3 : 4 :: 6 : ? a)30 b)25 c)15 d)113 4738
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