Wednesday, 16 January 2013

need math help,i got some
(want more help,simply comment,but sorry if i can't)

today its going to be about              "RATE"

simple demo->if one dozen egg cost 41.8,what is the cost of
30 eggs?

12 eggs->$1.8
1 eggs-->$18/12=180/12=15 cents.

another one

a car uses 40 liters of petrol to travel 340km.
How far can it travel if it only has 32 liters of petrol?

                                           
                                                 40 liters->340km

                                                   1 liters->340/40=8/1/2km

                                                32 liters->17/2 x 32=272km


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