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Mathematics, 09.03.2021 08:40 miriam62

2)When John Short increases the spend at which he motors from an average of 40mph to 50mph, the number of miles travelled per gallon decreases by 25%.If he travels 36 miles on each gallon when his average speed is 30 mph how many miles per gallon can he execpt at an average speed of 50mph? ​

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