A scooter tank has 7/3 litres of petrol.
Parmeet rides around for 3 hours and sees that the petrol level has come down to 1/2 litre.
How much petrol does she use riding a scooter?
amount used = (7/3 - 1/2) litres
= 14/6 - 3/6 = 11/6 litres
@Kaur
You are posting a lot of questions here, that is not a problem.
I am curious as to the kind of problem you post.
Some of your questions are quite challenging and require some
"sophisticated" methods to solve.
Others, like this one, are of a trivial nature. I am baffled, are you a student?
Kaur let slip one time that one of his problems was from a contest collection. So I think he just posts problems collected from browsing such sites, or the net in general. At this point, I don't know whether he is trying to learn maths on his own, or just likes seeing his name on the web site.
Like you, I don't mind, and I have been baffled by the complexity of some of them. I guess my questions are:
(a) why even bother to post some of the ridiculously easy ones? Surely they pose no real challenge
(b) why does he never include any of his own work? They can't all be just totally beyond his abilities.
I have curiosity to solve different types of sums from different sites.
Sometimes I stuck so I take help of you friends.
Sometimes I know solution but want to know if there is another method or not.
I am really thankful to you all who everytime helped me.
Hmmm. Thanks for commenting, @Kaur. If you have a solution, maybe you could post it with the question, and then ask whether there might be another way of looking at it. Otherwise, you run the risk of just seeing a repeat of your own work. We may not always have any further insight, but it would avoid redundancy of effort.
PS - where are you from? Your English is pretty good, but clearly not your native language.
To find out how much petrol Parmeet used riding the scooter, we need to subtract the final petrol level from the initial petrol level.
The initial petrol level in the scooter tank is 7/3 litres.
The final petrol level after 3 hours of riding is 1/2 litre.
To find the difference, we can subtract 1/2 litre from 7/3 litres.
Step 1: Make the denominators equal:
Multiply 1/2 by 3/3 to get 3/6 litres.
Step 2: Subtract the fractions:
7/3 - 3/6
Since the denominators are different, we need to make them the same by finding the least common denominator, which is 6.
Step 3: Convert the fractions to have the same denominator:
Multiplying the numerator and denominator of 7/3 by 2, we get 14/6.
Now we have 14/6 - 3/6 which equals 11/6 litres.
Therefore, Parmeet used 11/6 litres of petrol riding the scooter for 3 hours.