Hannah practices her guitar for 40 minutes on monday. on tuesday she practices for 5/8 of the time she practiced on monday. on wednesday she practices for 4/5 of the time she practiced on tuesday. how many minutes did hannah practice on wednesday.
a 20 minutes. b 25 minutes
c 30 minutes. d 40 minutes
show me how you get the answer

Barbara's piano instructors house is 7 1/8 miles from her house. after biking for 1 3/4 miles she stops to rest how much longer does she need to bike to reach her instructor's house

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.