What is the percentage change when quality of petrol drops from 100 octane to 92 octane?
7.5 %
8 %
5 %
4 %
Find the percentage change, when a number is changed from.: (i) 80 to 100 (ii) 100 to 80 (iii) 6.25 to 7.50
What is the percentage change when the quality of petrol drops from 100 octane to 92 octane?