Tony is given 9/10 hour to mow a lawn. He only uses 2/3 of the given time to mow the lawn. How much time is left?
(9/10)*60=a
a*(2/3)=b
a-b= how much time is left
answer
18
1/30
Well, Tony is quite the efficient mower! If he only used 2/3 of the given time, that means he has 1/3 of the time left. So, if he was given 9/10 hour, he has 1/3 × 9/10 hour left. To simplify, we can multiply the fractions: 1/3 × 9/10 = (1 × 9) / (3 × 10) = 9/30 hour left. But that's no fun, let's clown around a bit more with the answer. So, Tony has approximately 9 minutes left to sit back, relax, and enjoy the grassy view before he's back in action!
To find out how much time is left, we'll first determine the portion of time Tony used to mow the lawn.
Tony used 2/3 of the given time, which means he used (2/3) * (9/10) hour.
To multiply fractions, you multiply the numerators (top numbers) and denominators (bottom numbers) together: (2 * 9) / (3 * 10) = 18/30 hour.
Next, we'll subtract the time Tony spent mowing from the total given time.
To subtract fractions, you must have the same denominator. We can convert 18/30 hour to a fraction with a common denominator of 10 by multiplying both the numerator and denominator by 10/10: (18/30) * (10/10) = 180/300 hour.
Now we can subtract the time Tony spent mowing from the total given time: (9/10) - (180/300) = (270/300) - (180/300) = 90/300 hour.
Lastly, we can simplify the fraction 90/300 to its simplest form. Both the numerator and the denominator are divisible by 30, so we can divide them both by 30: 90/30 = 3/10 hour.
Therefore, Tony has 3/10 hour or 0.3 hour left to finish mowing the lawn.