Question

price of rice per kg rose in a week by 10 rupees but in the next week the price fell by 13 rupees what is the ultimate rise or fall in the price of rice?

Answer 1

Hello Roushan
The rise in price will be positive and fall will be negative.
Let the initial price of rice be x.
Then there is rise in price during the first week,so final price after week 1 is
                                            x+10
Now after week 2 the price fell by 13 rs,so final price after week 2 will be
                                             x+10-13=x-3
Now change in price=final price-initial price=(x-3)-(x)=-3
Therefore there is net decrease in price of rice by 3 rupees.Hope it helps.