Given:
perfect score- 100
number of questions of the test- 25
worth of each question- 4 points
Fred's score- 84
n- number of questions Fred had answered incorrectly.
solution:
solve for n
division sentence: (100 ÷ 4 ) - ( 84 ÷ 4 ) = n
(100 ÷ 4 ) - ( 84 ÷ 4 ) = n
25 - 21 = n
4= n
therefore, Fred had answered 4 test questions incorrectly.
The best thing to do is to found out the percentage that is faulty. 1% is equal to 10 faulty products, therefore, 0.5% is equal to 5. In order to out how many there are in 60,000, you need to simply multiply 5 by 60, which is 300. Therefore, 300 are faulty.
Hope this helps :)
Answer:
Step-by-step explanation:
<u>Use ratios:</u>
- 7.5 mots / 37.5 parlings = 13 mots / x parlings
- x = 13*37.5/7.5
- x = 65
Answer:
None because 78 * 7 = 546
Step-by-step explanation:
they added the tax witch is 20% more than what the price tag says
