A shop reduces the price of its dresses by 30%.
As a result it sells 60% more dresses than last month.
Calculate the percentage increase in its takings.
Let be the number of dresses.
x be the cost of the dress.
Last months takings was number of dresses multiplied by the cost of the dress which is
This month the dress has been lowered by % so is now
And they sold % more so becomes
So the takings this month is multiplied by which is which is a % increase.