Answers

2016-04-13T18:54:51+05:30
We must multiply 10% and (The original number)12
%(per cent) means per hundred.
so it is 10/100
then, 10/100 x 12 =6/5 that is 1 1/5 cents

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2016-04-13T20:22:27+05:30
New charge = 12 + 12*10/100
                      = 12 + 1.2
                      = 13.2 cents
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