Question

Bart practices his trumpet 1 1/4 hours each day. How many hours will he practice in 6 days? 8 2/4 hours 7 2/4 hours 7 hours 6 2/4 hours

Answer 1

1 and 1/4 becomes 1.25 because its easier to work with decimals 
(a 1/4 of a 100 is 25 so thats how we got 25)

then take 1.25x6=7.5

so option 7 2/4 because when you simplify 2/4 you get a half so
7.5
7 2/4
7 1/2 

are all the same thing