Question

Anna is going to play guitar in her school's annual concert if she starts by practicing for one hour per day can increase the time by 30 minutes each day how long will she practice on the seventh day ?

A) 140 min
B) 210 min
C) 240 min
D) 300 min

Answer 1

first day = 1 hr
second day = 1 hr 30 min
third day = 2 hr
fourth day = 2 hr 30 min
fifth day = 3 hrs
sixth day = 3 hr 30 min
seventh day = 4 hr.....(60 min per hr)..which breaks down to 60 * 4 = 240 minutes