Question

❤❤in prima cursa un automobil a consumat 25 % din benzina pe care o avea ...iar in adoua cursa 20%din rest ..Dupa cele doua curse au ramas in rezervor cu 6 litri mai multa benzina decat s.a consumat ....cati litri de benzina au fost la inceput?????

Answer 1

1)25/100x 2)20/100•75/100x=20•75x/100•100=15/100x x-25/100x-15/100x=6+25/100x+15/100x 60/100x=6+40/100x 20/100x=6 x=6•100/20=30l

Answer 2

100%-25%-20%=55%ramasa
55%-45%=6 litri
10%=6 litri
100%=100:10x6=60 litri au fost in rezervor
60:100x45=27 litri s-au consumat
27+6=33 au ramas