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# Help

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A fuel tanker weighs 2500 tons when 25% full and 3700 tons when 75% full. What is its weight in tons when empty?

I started by trying to find out how much the tank weighes. I tried subtracting the two to find out what t+2/4*oil equals to. I got stuck after here! What should i do next?

Apr 5, 2020

#1
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When the tank is 100% full, it weighs 10000 tons.

When the tank is 75% full, it weighs 3700 tons.

When the tank is 50% full, it weighs 5000 tons.

When the tank is 25% full, it weighs 2500 tons.

Here is a hint. Can you take it from here?

Apr 5, 2020
#2
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Hmm cal ty! But i know that i need to find out how much the tank weighs! I never thought of that so it might help.

Apr 5, 2020
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T = Tanker(empty)
F =Fuel
[T + 0.25F]=2500.........(1)
[T + 0.75F]=3700.........(2), solve for F, T
F =2400 tons - weight of fuel when Tanker is full.
T =1900 tons - weight of Tanker when empty.

Guest Apr 6, 2020
edited by Guest  Apr 6, 2020
#3
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I got the tank is 1900 tons since when its 75% full its 3700 and when its 25% full it weighs 2500 so 3700-2500 is 50% of fuel which is 1200 tons. So 25% would be 600 tons. 2500-600=

1900 tons.

ðŸ˜…ðŸ˜…ðŸ˜…ðŸ˜…

Apr 5, 2020
#4
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Ohhh! Thank you I never though of that way!! Ha you did very gud! Ur gunna eventually have tons of likes!

Apr 5, 2020
#5
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I agree!!

A new person with 111 likes is pretty impressive!

CalTheGreat  Apr 6, 2020