Page 113 - Fun with Mathematics 2
P. 113

STORY SUMS


               Sahil went to a shop and bought a juice bottle for  ` 15.00, a packet of
               chips for ` 10.50 and toffees for ` 5.50. How much money should he give to
               the shopkeeper?


                                                                                     `       p
                                                                                 1 1
                                       Cost of a juice bottle             =        1 5  .  0 0

                                       Cost of chips                      =        1 0  .  5 0

                                       Cost of toffees                    =  +  5  .  5 0

                                       Total amount                       =        3 1  .  0 0


               So, Sahil should give ` 31.00 to the shopkeeper.


                 My father gave me ` 30.00 to buy a geometry box. Its price was ` 27.25.

               How much money should I get back from the shopkeeper?

                                                                                    `        p
                                                                                 2 9      100
                                       Total money given                  =    3 0  .  0 0

                                       Price of the geometry box  =  – 2 7  .  2 5


                                       Money to be returned               =          2  .  7 5

               So, the money I should get back from the shopkeeper is ` 2.75.


               The cost of 9 packets of potato chips is ` 108.90. Find the cost of 1 packet of
               potato chips.


                                                                             1 2 1 0
                                                                      9  1 0 8  9 0
                       Cost of 9 packets = ` 108.90                     –   9             Place decimal

                     Cost of 1 packet  = ` 108.90 ÷ 9                        1 8          before the last

                                              = ` 12.10                   – 1 8           two digits.
                                                                               0 9

                   So, the cost of 1 packet of potato                          – 9

                   chips is ` 12.10.                                           0




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