Quantitative aptitude bits

• The graph of the equation 2x-3y=6 intersects the y-axis at the point

  (0,-2)

• What must be subtracted from the term of ratio 5:8 to get 2:5?

  3

• By selling 21 articles a shop keeper gains the selling price of one article this gain percentage is

  5%

• Banker's gain on a bill is Rs. 40; whose present worth is Rs. 1440. Then T.D. is

  Rs. 240

• If the mean of 5 observations is x, x+2, x+4,x+6 and x+8 is 11, then the average of first 4 observations is

  10

• The mean of 200 items was 40. Later it was discovered that to observations were mis-read as 46 and 32 in place of 64 and 23. The corrected mean is

  200.225

• The valued of ?13+?7+?4

  4

• The value of log 5?5 125 is

  2

• the first,second and the last terms of a G.P. of n terms are 3,12 and 3072 respectively. Then the value of n is

  6

• The age of a man and his son are in the ratio 3:1. fifteen years hence, the ratio will be 2:1. then the present ages of the father and son are

  45,15 years