Kelsey painted one fourth of her bedroom in three seventh of an hour. At this rate, how long would it take her to paint the entire room? three over twenty eight hour twenty eight over three hours twelve over seven hours seven over twelve hour

Answer:The time it will take Kelsey to paint the entire room is:    Twelve over seven hours  Step-by-step explanation:It is given that:Kelsey painted one fourth of her bedroom in three seventh of an hour.This means that:  1/4 of bedroom takes 3/7 of an hourThis means that the whole of the bedroom will take 4 times the time it took to cover 1/4 th of bedroom.i.e. it will take:[tex]\dfac{3}{7}\times 4\\\\\\=\dfrac{12}{7}\ hour[/tex]Hence, the total time it will take to paint the whole room is:                    twelve over seven hours