Answer:
25 questions
Step-by-step explanation:
The answer to this question can be solved by setting up a proportion, or equivalent ratios (fractions). Since we know that 18 questions was equal to 72% correct on the test, we can set up a proportion to find the total number of questions:
, where 'x' represents the total number of questions (or 100%) of the questions on the test.
Cross-multiply and divide: 72x = 18(100) or 72x = 1800
Divide both sides by 72: 72x/72 = 1800/72
Solve for x: x = 25 questions
Answer:
it's 0.198
Step-by-step explanation:
Answer:
0.198
Step-by-step explanation:
divide 198 by 1,000
7 % of cost price is 2.80 , What about 1%?
7 = 2.80
1 = x (where x is the price value of 1% in dollars)
We simplify the above equation, so:
7 × x = 2.8 × 1 → 7x = 2.8 → x = 2.8 / 7 → x = 0.4 dollars
We know that 100% represents the whole price,
so if 1% is 0.4 dollars, then 100% will be 0.4 × 100 = 40 dollars
Therefore the store charged $40 dollars for the helmet before tax
Answer: 35
Step-by-step explanation:
They purchased 40 uniforms. If you divide 3,000 by 40, you'll find the amount that they paid for each uniform.
3,000 divided by 40 is 75. They paid $75 per uniform. To find the difference between the original price and the returned money, subtract 40 from 75.
75 minus 40 is 35. The difference between what they paid for each uniform and what they got for each return is $35.