Question

Find the whole quantity if 

1.  5% of it is 600. 
2.  12% of it is Rs 1080. 
3.  40% of it is 500 km. 
4.  70% of it is 14 minutes.
5. (e) 8% of it is 40 litres

Answer 1

(a) \(5\%\) of \(x\) = \(600\)

\(\frac{500}{100}\times x= 600\)

\(x=600\times\frac{100}{5}\)

= \(12000\)

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(b) \(12\%\) of \(x\) = Rs \(1080\)

\(\frac{12}{100}\times x= Rs\;1080\)

\(x= RS \;1080\times\frac{100}{12}\)

= \(Rs\;9000\)

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(c) \(40\%\) of \(x\) = \(500\) km

\(\frac{40}{100}\times x=500\;km\)

\(x=500\times\frac{100}{40}=1250\;km\)

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(d) \(70\%\) of \(x\) = \(14\) min

\(x\times \frac{70}{100}=14\min\)

\(x=14\times\frac{100}{70}=20\;min\)

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(e) \(8\%\) of \(x\) = \(40\) L

\(x\times\frac{8}{100}=40 \;L\)

\(x=40\times \frac{100}{8}\)

= \(500\;L\)