george can do 10 math problems in 25 minutes. at this rate how long will he take to complete 20 problems

George can do 10 math problems in 25 minutes. At this rate, how long will he take to complete 20 problems? => 55 minutes or 60 minutes or 45 minutes ..

i) A sequence of multiples of 5 5, 10, 15, 20, ii) A sequence of reciprocals of positive integers The above two sequences are clearly the infinite sequence..

Find the total volume of oxygen inhaled in the first 20 minutes after the beginning of the ride, from the graph which shows the rate of inhalation of oxygen by a person riding a bicycle very rapidly for 10 minutes. Use rectangles of width 1unit. => ..

Jason started his lunch at 12:45 P.M. and took 20 minutes to finish his lunch. How long did he eat? => 1:05 P.M. or 3:10 P.M. or 2:00 P.M. or 1:35 P.M...

Kate started reading a story book. Initially, she read 20 pages. By the end of 4 days, she completed 84 pages. Find the average rate of reading the book and use it to determine the number of pages can be completed after 10 days. => 16 pages per day,..

A tank is in the shape of a cone with a depth of 20 cm and maximum inner radius of 30 cm. Water is pumped into it at a rate of 900 c.c per minute. How long it takes for the vessel to get filled up? [ Take π = 3. ] => 20 minutes..

Andy is trying to compare the rate plans of two telephone companies. Company-A charges a fixed monthly rental of $40 and calls are charged at $0.40 per minute. Company-B charges a fixed monthly rental of $20 and calls are charged at $0.60 per minute. Find the..

A telephone service charges $10 per month plus 15 cents per minute. The table shows the relationship between the number of minutes and the cost. Use the rate of change to identify a linear equation for the data shown in the table. Number of Minutes ..

Indian Pacific is an Australian train that runs from Sydney to Perth (2460 miles) in three days. If it were to run from Washington DC to Boston MA (416 miles), then how long will it take to complete the journey? => 13.25 hrs or 10 hrs or 12.18 hrs o..

A is a plant 10 cm tall and B is another plant 12 cm tall. B is growing at a rate of 2 cm per month. What should be the growth rate of A so that its height is equal to the height of B after 4 months? => 3.5 cm/month or 2.0 cm/month or 2.5 cm/month o..