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
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
and after further 1 year (present time) it will be
therefore
Therefore 2 years before the working capacity was 625 litres
Answered by
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
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