Question

Большая грузовая машина может перевезти 120 тонн угля за 24 рейса, а маленькая- за 40 рейсов. За сколько рейсов перевезут этот уголь две машины, если будут работать они вместе?

Answer 1

120:24=5 т перевозит большая машина за 1 рейс
120:40=3 т перевозит маленькая машина за 1 рейс
5+3=8 т перевозят вместе за 1 рейс
120:8=15 рейсов
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Answer 2

Calculating the number of trips for two trucks working together

Let's break this down step-by-step: * The big truck can transport 120 tons of coal per 24 trips * The small truck can transport 120 tons of coal per 40 trips * If they work together, their combined load per trip would be the average of a big and small truck * So together they could transport (120 + 40) / 2 = 80 tons per trip * To calculate the number of trips: ** Total coal to transport is unknown ** Let's call it X tons ** Each trip they transport 80 tons together ** So number of trips = X / 80 ** Since the question asks to find the number of trips, we set up an equation: ** X / 80 = number of trips ** Solve for the number of trips

So if the two trucks work together, transporting 80 tons per trip on average, the number of trips they would need to transport any amount of coal X is X / 80 trips.

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