Question

Answer this question​

Answer 1

Answer:

30% of 50 is 15

50% of 50 is 25

25-15=10 is your answer

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Answer 2

Answer:

10 litres

Step-by-step explanation:

At present no. of litres in tank=

$30\% \times 50 \: l \\ = \frac{30}{100} \times 50 = 15 \: l$

We have to fill the tank by 50%. In litres it is:

$50\% \times 50 \: l \\ = \frac{50}{100} \times 50 = 25 \: l$

So, we have to add (25-15 litres) = 10 litres