Gasoline price 2

During the COVID-19 pandemic new gasoline price shceme is given by Marilou's Gas Station to help our drivers. On their purchase, the first 4 liters cost Php120.00, while the succeeding 1 1/2 liters would cost Php10.00 more than the cost of a liter. If john bought 17 1/2 liters, how much should he pay?

Correct result:

x =  660 Php

Solution:

V1=4 l c1=120.00/V1=120.00/4=30 Php/l c2=c1+10=30+10=40 Php/l  V=1712=17 2+12=352=17.5 l V2=VV1=17.54=272=13.5 l  x=V1 c1+V2 c2=4 30+13.5 40=660 Php



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Showing 1 comment:
#
Dr Math
vznasi se napr. ve olivovej oleji... v benzine klesa (700 kg/m3) .... a ve vode stoupa (hustota 1000 kg/m3)

Vynatek ze tabulek (latka a hustota v kg/m3):
Benzín 680 - 780
Olej minerální 850 - 960
Petrolej 790 - 830
Benzol 880
Olej olivový 920
Voda 4°C 1000
Dehet černouhelný 1200
Olej parafínový 900 - 930
Glycerin 1260
Olej ricinový 970
Voda mořská 4°C 1030
Nafta 760
Olej řepkový 910 - 920

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