Q)9,10,11,12 solutions please 9. Shaurya and his fncnds went out for lunch. They ordered four pizzas and four cold drinks. Ifthe
cost of each pizza is and cold drink costs each. find the total bill amount if they had to
pay I & servtcc tax also.
10. Abhay purchased peanuts for 00 per kg. His grandpa said that when he was young, peanuts used
to be per kg. Find the percentage increase in the price of peanuts.
11. The ofa laptop depreciates by 35% every year. If the present value of a laptop is
what be its value after one year?
12. Ali •as drat*ing a salary of e 75.000 per month. His salary increased to per month. Find
percentage increase in his salary.
PROFIT AND Loss
Peter. the shopkeeper ofa clothes store, buys articles from the wholeseller
and sells them to the customers.
• price at which the shopkeeper buys an article is called the
cost price (denoted as C.P).
• The price at which the shopkeeper sells an article is called the
selling price (denoted as S.P.).
On comparing C.P. and S.R. the following three cases arise.
Case I: If C.P. < S.P., this implies the sale is profitable and Profit = S.P. — C.P.
Case II: If C.P. = S.P., this implies there is no profit, no loss in the transaction.
Case 111: If C.P. > S.P., this implies the sale incurs loss and Loss = C.P. — S.P.
