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Car a and car B leave from a and B at the same time. Car a travels 50 kilometers per hour and car B 60 kilometers per hour. After 4 hours, the two cars travel 80% of the whole journey. How many kilometers are there between a and B?
(50 + 60) × 4 / 80%, = 110 × 4 / 0.8, = 440 / 0.8, = 550 (km); answer: A and B are 550 km apart
Two cars leave from a and B at the same time. Car a travels 50 kilometers per hour and car B 60 kilometers per hour. After 4 hours, the two cars travel 4 / 5 of the whole journey. How many kilometers are there between the two places?
（50+60）*4/80%
=440/0.8、
=550 km
The two cars leave from a and B at the same time. Car a travels 50 kilometers per hour and car B 60 kilometers per hour. After four hours, the two cars travel 80% of the whole journey. How many kilometers are there between a and B?
(50 + 60) X4 △ 0.8 = 550
Car a and car B leave from a and B at the same time. Car a travels 50 kilometers per hour and car B 60 kilometers per hour. After 4 hours, the two cars travel 80% of the whole journey. How many kilometers are there between a and B?
(50 + 60) × 4 / 80%, = 110 × 4 / 0.8, = 440 / 0.8, = 550 (km); answer: A and B are 550 km apart
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