Amotorbike uses petrol and oil mixed in the ratio 13: 2
a)how much of each is there in 30 litres of mixture ?
b) how much petrol would be mixed with 500 ml of oil?

Part A) of petrol and of oil

part B) or of petrol

Step-by-step explanation:

Part A) How much of each is there in 30 liters of mixture ?

Let

x-----> the amount of liters of petrol

y----> the amount of liters of oil

we know that

-----> equation A

---> equation B

substitute equation A in equation B

Find the value of x

Part B) How much petrol would be mixed with 500 ml of oil?

Convert ml to l

we know that

using proportion

89

step-by-step explanation:

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step-by-step explanation: