exam Maths Puzzle Numerical Ability

Age at first marriage. The median age at first marriage for femaile increased from 24.5 years in 1995 to 25.1 years in 2000. Let 1995 be year 5 and 2000 be year 10.

a) find th

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Here is the equation: x sq.rt. 18 minus 3 sq.rt. 8x^2 There are 2 copy machines. One can do a printing job in 75 minutes. If both machines print at the same time they can do the printing job in 50 minutes. How long will it take the other machine to do the printing job by itself.