Question

7. If any number is decreased by 30% then it is increased by 10% then it will
decreased by
a) 20%
b) 77%
c) 80%
d) 23%
​

Answer 1

Answer:

a

Step-by-step explanation:

We assume number is x

number is decreased by 30%

X-30=0

increased by 10%

X+10=0

With subtract

X-20=0 thus

Xdecreased by 20%