kholman
27.09.2019 •
Mathematics
Atrucker had a load of grain containing 2 tons. she unloaded 1 ton 1,200 pounds at the warehouse. how much grain does she still have left on the truck?
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Ответ:
Let car b be travelling at x mph. as they are travelling towards each other their speed of approach is (x + x + 15 ) mph. So we have the equation
speed = distance / time
2x + 15 = 250 / 2
2x = 125 - 15 = 110
x = 55 mph
Car b travels at 55 mph and car a travels at 70 mph Answer