What is the difference between 0.6 and 0.6%?

If 20% of (A + B) = 30% of (A − B), then what percentage of B is equal to A?

P is 20 percent more than Q and Q is 30 percent less than R. If P is 420, then What is the value of R?

Due to 20% reduction in the price of wheat, a person can buy 10 kg more wheat than before for Rs 600, what is the price of wheat after the decrease in the price?

The price of wheat is reduced by 4 % How many kilogram of wheat can now be bought for the money which was sufficient to buy 48 kg of wheat earlier?

If the sales tax be reduced from $$ 3{1\over2}$$ % to $$ 3{1\over3}$$%, what difference does it make to person who purchases an article whose marked price is Rs.8400? 

In a town, 60% of the total voters is male and the rest are females. If 60% of the males are literate and 70% of the females are literate, then by what percent is the number of literate males more than that of illiterate females?

When the price of an audio system was reduced by 20%, the sale increased by 80%. What was the net effect on the sale?