Jeffrey runs at an average speed of 8 mph and he bikes at an average speed of 14 mph. 1)After running x hours yesterday, Jeffrey biked 1.5 more hours than he ran. How far did he bike?

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?