interview Interview Category

Father’s age is 5 times his son's age. 4 years back the father was 9 times older than son. Find the fathers' present age.

(a) 45 Years (b) 40 Years (c) 50 Years (d) 35 Years

A shopkeeper bought a watch for Rs.400 and sold it for Rs.500.What is his profit percentage?

(a) 100% (b) 20% (c) 25% (d) 10%

A number 54 is divided into two parts, so that 10 times the first and 22 times second are together equal to 780. The difference of the parts is:

(a) 12 (b) 14 (c) 20 (d) 34

In simple interest what sum amounts of Rs.1120/- in 4 years and Rs.1200/- in 5 years ?
(a) Rs. 500 (b) Rs. 600 (c) Rs. 800 (d) Rs. 900

Read Solution (Total 1)

Q-1) Father's present age is 40..
--------> suppose fathers current age is x,and his son's is y...then
from first statement we can write x=5Y..Rewrite this equ. x-5y=0-----Eq.1)

from second statement we can write (x-4)=9*(y-4), Rearrange it x-9y=-32---Eq.2)

Solve Eq.1) & Eq.2).....x=40,y=8
10 years agoHelpfull: Yes(1) No(1)

interview Other Question

A rectangular room measures 7.5 meters in length and 3 meters in width. The room has a height of 3 meters. A spider sits 25 centimeters down from the ceiling at the middle of one of the short walls. A sleeping fly sits 25 centimeters up from the floor at the middle of the opposite wall. The spider wants to walk (i.e., move along the walls, floor, and ceiling only) to the fly to catch it. How can the spider reach the fly, walking just 10 meters? Is it even possible? Mani age is 1/6th of her father's age.mani father age wiil twice of vimal's age will be twice of vimal's age after 10 years.if vimal eighth birthday was celebrated two years before,then what is mani present age?