Find the number whose 3 times when subtracted from 9 becomes 12.
a) 1
b) ̶ 1
c) 3
d) ̶ 3
Solution:let the number = x
3 times of the number = 3x
9 ̶ 3x =12 -3x =12 - 9 -3x = 3 x=-1
If 5 is subtracted from threes a number the result is 16. Find the number.
a) 3
b) ̶ 2
c) ̶ 7
d) 7
Solution:let the number = x
3 times of the number = 3x
3x - 5 =16 3x =16 + 5 3x = 21 x= 7
Age of father is twice the age of his son. If father is 16 year older than his son, find the age of the father and his son.
a) 32, 16
b) 16, 32
c) 16, 28
d) 28,16
The sum of a number and 9 is ̶ 2. Find the number.
a) 7
b) 11
c) ̶ 11
d) 18
Solution:suppose the number = x
x + 9 =
The sum of ̶ 5 and a number is ̶ 15. Find the number.
a) 10
b) ̶ 10
c) 9/2
d) 12/2
