A motorist's cost for petrol and oil is in the ratio 17:3. An increase of 8% in the price of petrol and 4% in the price of oil increases his annual bill for running costs by for petrol and oil before the increase. rs.740. Find his annual bill for petrol and oil before the increase.
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Answer:
Step-by-step explanation:
8% of 17 = 1.36
4% of 3 = 0.12
Total increase % = 1.48
1.48 % = Rs 740
100 % = Rs 740*100/1.48
= Rs 50,000
Total annual bill = Rs 50,000
Bill for Petrol = Rs 50,000*17/20 = Rs 42,500
Bill for oil = Rs 50,000*3/20 = Rs 7,500
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