You can buy 2 DVDs for the same price you would pay for 3 CDs selling for $13.20 a piece.Explain how you could find the price of 1 DVD.
Answers
So,
3 CD's sell for $13.20 each. 3 * 13.20 = $39.60
$39.60 is also the price for 2 DVD's.
Divide $39.60 by 2. $19.80
Each DVD is $19.80.
a survey conducted in a school showed that 65% of the students walked to school. The remaining students took buses to school. The ratio of students who took buses to those who took public buses was 4:3. There were 360 more students who walked than took buses. How many students took public buses to school? Please explain everything you did or just write your equations.
Answers
I fear that there is an error copying your assignment. 65% of the students walked. Are all of the other students on buses? Are there both public buses AND private buses? Assuming that you need to know BOTH kinds of buses, try this:
65% of the students walked, so since 100% - 65% = 35% then this means that 35% of the students were on buses. Since we know that there are 360 more walkers than bus riders, then one equation we know is: 65% of S = 360 + 35% of S (let S = total # of students) .65 S = 360 + .35 S - .35 S = - .35 S Subtract .35 S from both sides .30 S = 360 Divide both sides by .30 (or .3) .30 .30 S = 1,200 so we know that this is the total number of students, but that is not what was asked. They want to know how many are on buses and specifically how many are on public buses, if I read this correctly. Since the walkers = 65% of 1,2000 and we know of means TIMES, then .65 (1,200) = 780 walkers 1,200 total students minus 780 walkers = 420 bus riders
Now, if there is not a misprint and we really have to figure out the public bus riders as compared to the private bus riders, then remember the ratio from above in the question: 4 bus: 3 public buses Now if I read this right, that means that 3/4ths of the bus riders were on public buses so 3/4 of 420 means 3/4 times 420 = 3 times 105 = 315 public bus riders (which coincidentally leaves 105 private bus riders, but since they are private we don't know much about them. Ha-Ha..... I made a lame joke.)
So your answer is 315 public bus riders
Answer:
126
Step-by-step explanation:
3.6x65
360-234
a kayaker travels x miles per hour downstream for 7 hours. on the 10-hour return trip, the kayaker travels 3 miles per hour slower. how far did the kayaker travel in total?
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im just here for the points
Ian's science book has 20 fewer pages than his math book. Ian's science book has 250 pages. Which equation can be used to calculate how many pages Ian's math book has? Let the variable p stand for the number of pages in the math book. A. 250 – 20 = p B. 250 = p + 20 C. 20 – p = 250 D. 250 = p – 20
Answers
the answer is simply C. 20-p=250
the math book would have 270 pages so the equation is the letter B.