Question

Out of total production of 6450 tonnes of a coalmine a
quantity of 645 tonnes was lost during extraction. What
per cent of the total production was the net coa
extracted?​

Answer 1

Answer:

90%

Step-by-step explanation:

645 equates to 10% of total production and wasted during process therefore, remaining 90% is extracted.

Answer 2

6450-645=5805 tonnes of total coal is extracted

PERCENTAGE

5805/6450×100

= 90% coal is extracted

please mark as brainliest