Answer:
<h3><u>Required Answer</u><u>:</u><u>-</u></h3>
- A student earned 80% in a math test which has 20 problems.
- It means The student answers 80% of 20 problems correctly
The student answered 16 problems correctly
Wait I’m confused which number haha
Answer:
The last gearwheel would make 3 revolutions.
Step-by-step explanation:
The measure of the revolution of a gear per minute is referred to as the speed ratio. The speed ratio is the ratio of the speed of the driver gear to that of the driven gear, or ratio of the number of teeth of the driven gear to the number of teeth of the driver gear.
In the given question, the second and third gears are idlers. while the first is the driver and the fourth the driven.
The revolution of the last gearwheel can be determined by;
Speed ratio =
=
=
Speed ratio = 1 : 3
The last gear would make 3 revolutions.