If 10 % of an electricity bill is deducted, 45 is still to be paid. How much was the bill? Select:
A) 50 B) 60 C) 55 D) 70 E) None of these
Let the bill be x. Then   90% of x = 45   ⇒ x = 45×100/90 = 50   50nswer 50
<result>A</result>
If 10 % of an electricity bill is deducted, 45 is still to be paid. How much was the bill?