Answer:
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
Tom has saved $72 and 8 cents
<h3>How to calculate the amount saved ? </h3>
Tom is saving for his camp
The camp costs $364
He has saved 1/5 of the cost
Therefore the amount saved can be calculated as follows
= 1/5 × 364
= 72.8
Hence Tom saved $72 and 8 cents for his camp
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Supposing a spinner with 8 regions, 3 of which are B, there is a 0.375 = 37.5% probability of spinning a b.
<h3>What is a probability?</h3>
A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.
In this problem, we suppose a spinner with 8 outcomes, 3 of which are b, hence the probability is given by:
p = 3/8 = 0.375 = 37.5%.
More can be learned about probabilities at brainly.com/question/14398287
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1. x=2
2. x=-9
3. x=-1/3
4. p=28/3
5. m= 4