SSC CGL 20201)If a sum of Rs. 1,180 is to be divided among A, B and C,such that 2 times A’s share, 5 times B’s share and 7 times C’s share, are equal, then A’s share is:
Rs. 700
According to the question, \(2\times A= 5 \times B= 7\times C\) ; Ratio of the share of A, B and C = \({1\over2}:{1\over5}:{1\over7} \) = 35 : 14 : 10 ; A’s share = \({35\over59}\times1180\) = Rs. 700
SSC CGL 20202)The population of a city increased by 30% in the first year and decreased by 15% in the next year. If the present population is 11,050, then the population 2 years ago was:
10,000
Let 2 years ago the population of a city be x.
Population after 1 year =\( x \frac{130}{100}\) = 1.3x;
Population after 2 year = \(1.3x \frac{85}{100}\) = 1.105x;
11050 = 1.105x;
x = 10000