Question

2., (a) One third of a number when added to 1 gives 5. Find the number.
,
(b) If 20 is subtracted from 4 times a number, we get 20. Find the number.
(c) If 121 is added to 11 times a number, it becomes 132. Find the number
and then
Answer in step wise step explaination​

Answer 1

Answer:

a) let the number is x

1/3.x+1=5

=> x/3=5-1=4

=> x=3*4=12

so the number is 12

b) let the number is x

4x-20=20

=> 4x=20+20

=> 4x=40

=> x=40/4

=> x=10

the number is 10

c)let the number is x

then,

11x+121=132

=> 11x=132-121

=> 11x=11

=> x=11/11

=> x=1

the required number is 1