Math, asked by rupshasen42, 1 month ago

The working capacity of an oil machine decreases every year by 8%. If at present the machine can produce 529 litres of oil in a day, 2 years ago it could produce:
a) 600 litres.
b) 625 litres.
c) 650 litres.
d) 712 litres.

PLEASE EXPLAIN​

Answers

Answered by SwarajBose
1

Answer:

Option b. - 625 litres

Step-by-step explanation:

If decreased by 8% then 92% remains

Let before 2 years the working capacity was = x litres in a day

after 1 year it will be = \frac{x*92}{100}

and after further 1 year (present time) it will be =\frac{x*92*92}{100*100} = 529 litres\\

therefore x = \frac{529*100*100}{92*92} = 625

Therefore 2 years before the working capacity was 625 litres

Answered by anjumanyasmin
0

From the given question the correct answer is 625 liters.

If decreased by 8% then 92% remains

Let before 2 years the working capacity was = x litres in a day

after 1 year it will be  

and after further 1 year (present time) it will be  

therefore  

Therefore 2 years before the working capacity was 625 litres

Similar questions