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# Numeracy GCSE watch

1. In Wales, we have to do a Numeracy GCSE and I honestly don't understand any of the questions! I'm getting so stressed because I feel so stupid.
Here are some examples of questions I'm finding tough,

"At an oil refinery, it takes 2 hours for 11 pumps to deliver 60 thousand litres of oil to a storage tank. How long would it take for 8 of these pumps to deliver 40 thousand litres of oil to the tank? The rate of delivery is equal for each pump. Give your answer in hours and minutes."
2. (Original post by CresentHan)
In Wales, we have to do a Numeracy GCSE and I honestly don't understand any of the questions! I'm getting so stressed because I feel so stupid.
Here are some examples of questions I'm finding tough,

"At an oil refinery, it takes 2 hours for 11 pumps to deliver 60 thousand litres of oil to a storage tank. How long would it take for 8 of these pumps to deliver 40 thousand litres of oil to the tank? The rate of delivery is equal for each pump. Give your answer in hours and minutes."
Find the rate of pumping for each pump, then work out how long it will take.

If it takes 2 hours for 11 pumps, then it will take 1 pump 22 hours to deliver 60 000 litres. 60000/22 = 2727.2727272727 litres per hour for each pump.
You have 8 pumps, so 2727.272727*8= 21818.181818 per hour for the whole 8 pumps. You need 40000, so 40000/21818.181818 which gives 1.833333333 hours. Convert this in to minutes by multiplying by 60 which gives 110 minutes, which is one hour and 50 minutes. Hope that helps!

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