40 mph would be 120 miles in 3 hours (120/40)
80 mph is 120 miles in 1.5 hours(120/80)
3 - 1.5 = 1.5, not 3 hrs
Change the speed to 20 mph( 1/2 the speed) to double the hours.
20 mph = 6 hours(120/20)
40 mph = 3 hrs(120/40)
6 - 3 = 3 hours difference
The second expression is 8 times the first so the answer is 3 * 8 = 24.
Answer:
r=12.5 units
Step-by-step explanation:
Well assuming that DM means diameter of a circle, then r should be the radius of the circle.
Diameter of a circle is twice the radius of the circle, hence with the value of Diameter, you should half it to get the value of radius.
Given diameter =25
Radius will be= 25/2 = 12.5 units
Answer:
14 candy Bars
Step-by-step explanation:
Let's under the question before we attempt it.
Total number of Candy Brooklyn is supposed to sell = 20
Percentage of Candy Bars sold= 70%
To know the exact number of Candy sold, it's means we must know the exact value of 70% of 20.
To solve this, we just proceed with mathematical operations.
Therefore:
70% of 20
= 70 / 100 * 20
= 1400 / 100
= 14.
It therefore means that, Brooklyn sold 14 Candy Bars
Math is fun! Lets Keep learning