Search results
12 lis 2015 · Using a ratio table to solve a word problem involving equivalent rates. We find the unit rate and then scale up to find equivalent rates.
With the current: Distance = 8 miles, Time = 2 hours Against the current: Distance = 6 miles, Time = 2 hours. We can use the formula: Distance = Rate × Time. For rowing with the current: 8 = (b + c) × 2. For rowing against the current: 6 = (b – c) × 2. Now we have a system of two equations: 2b + 2c = 8 2b – 2c = 6
When solving these problems, use the relationship rate (speed or velocity) times time equals distance. [latex]r\cdot t=d[/latex] For example, suppose a person were to travel 30 km/h for 4 h. To find the total distance, multiply rate times time or (30km/h)(4h) = 120 km. The problems to be solved here will have a few more steps than described above.
Janae walked 3 miles per hour. In the problems on this page, we solved for distance and rate of travel, but you can also use the travel equation to solve for time. You can even use it to solve certain problems where you're trying to figure out the distance, rate, or time of two or more moving objects.
The formula for distance problems is: distance = rate × time or. d = r × t. Things to watch out for: Make sure that you change the units when necessary. For example, if the rate is given in miles per hour and the time is given in minutes then change the units appropriately.
WORD PROBLEMS ON AVERAGE SPEED. Problem 1 : David drove for 3 hours at a rate of 50 miles per hour, for 2 hours at 60 miles per hour and for 5 hours at a rate of 70 miles per hour. What was his average speed for the whole journey? Solution : Step 1 : Formula for average speed is. = Total distance/Total time taken.
16 ft/s 2 to kilometres per hour squared; For questions 19 to 27, solve each conversion word problem. On a recent trip, Jan travelled 260 miles using 8 gallons of gas. What was the car’s miles per gallon for this trip? Kilometres per litre? A certain laser printer can print 12 pages per minute. Determine this printer’s output in pages per ...
