SOLUTION: Mr Johnson travelled at 60 km/h for y hours. He used 15 litres of petrol. How much petrol dod he use to travel another 120km? Express your answer in terms of y.
Algebra ->
Test
-> SOLUTION: Mr Johnson travelled at 60 km/h for y hours. He used 15 litres of petrol. How much petrol dod he use to travel another 120km? Express your answer in terms of y.
Log On
Question 350513: Mr Johnson travelled at 60 km/h for y hours. He used 15 litres of petrol. How much petrol dod he use to travel another 120km? Express your answer in terms of y. Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! speed = 60 km/h
time = y hours
distance = speed & time
= 60*y
60y km.
For 60y km 15 litres
1 km 15/60y litres.
...
1km 15/60y litres
120 km the consumption will be 120*15/60y
=30/y litres
..
total consumption = 15 + 30/y litres
