Question

1- Frame the equations and solve:
a) A number added to its half gives72.Find the number.
b) Raju is four years younger than Biju. Sum of their ages is 28.Find their ages.
c) Raj has 75 more stamps than Mani. The total number of stamps is 325.Find the number of stamps Mani has?
d) The number of marbles Rohan has is 2 more than twice the number of marbles Mohan has. The number of marbles is 140.Find the number of marbles Rohan has e) Rahul is three times as old as his son’s age and the sum of their age is 60.What is Rahul’s age?

Answer 1

a) let the number be x,
x+1/2 of x = 72
x/1 + x/2 =72
3x/2 = 72
x = 72 ×2/3
x =24 ×2
x = 48