Question

-) Seven taken away from twice a number is 27.
-) Aditya subtracted thrice the number of story books he has from 100, he finds that the number is 34.
• A number multiplied by 4 gives 64.

Answer 1

Answer:

1. 2x - 7 = 27

2. 100 - 3x = 34

3. 4x = 64

Answer 2

1) Let us take the number as x

2x-7=27

2x=27+7

x =34/2

x=17

number is 17

2) Let us assume he has y books then

100-3y=34

-3y =34-100

y=-66/-3

=22

he has 22 books

3) let us assume the number be c than

4c=64

c=64/4=16