If the length of a rectangular field is increased by 20% and the breadth is reduced by 20%, the area of the rectangle will be 192 m2. What is the area of the original rectangle ?
Change in area = 20- 20- 20×20/100 =-4%
∴ 4% area is decreased.
let x be the initial area.
Then, 96x/100 =192
96x = 19200
x = 19200/96
x = 200m2
Father’s age is 30years more than the son’s age. Ten years hence the father’s age will become three times the son’s age that time. What is son’s present age in years ?
Mr. X invested a certain amount in Debit and Equity funds in the ratio of 4:5 respectively. At the end of one year, he earned a total dividend of 30% on his investment. After one year he reinvested the amount including dividend in the ratio of 6:7 in Debt and Equity Funds. If the amount reinvested in Equity Funds was INR 94,500/-, what was the original amount invested in Equity Funds?
Directions (Next Five Questions) : In each of these questions, a number series is given. In each series only one number is wrong. Find out the wrong number.
7 13 25 49 97 194 385
32 16 24 65 210 945 5197.5
2 8 12 20 30 42 56
