
General Ability Quantitative Ability/Reasoning ; Logical Reasoning ; Analytical Reasoning/Ability ; Mental Abilities 
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#1




General Ability. Let's practice for CE2019
Village x has a population of 68000 which is decreasing at the rate of 1200 per year. Village y has a population of 42000, which is increasing at the rate of 800 per year. In how many years will the population of two villages be equal?
Stepbystep explanation: Let the number of years be x Village x: Initial population = 68000 Decrease in 1 year = 1200 Decrease in x year = 1200x Village y: Initial population = 42000 Increase in 1 year = 800 Increase in x year = 800x Solve x: When both villages have the same population 68000  1200x = 42000 + 800x 2000x = 26,000 x = 26000 ÷*2000 = 13 Answer: The two villages will have equal number of population in 13 years. 
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#2




Simple Interest
A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:
A. Rs. 650 B. Rs. 690 C. Rs. 698 D. Rs. 700 Answer: Option C Explanation: S.I. for 1 year = Rs. (854  815) = Rs. 39. S.I. for 3 years = Rs.(39 x 3) = Rs. 117. Principal = Rs. (815  117) = Rs. 698.
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