Lee spent 10 hours at the pool last week. she practiced the butterfly for 2 hours, the breaststrake for 5 hours and the backstroke for 3 hours. this week she only has 5 hpurs to spend at the pool. she wanta to keep the same percentage pd time spent on eaxf stroke. how many hours will she practice the breaststroke

2.5 hours

1) Find the percentage practiced of each stroke in the 10 hours last week
Butterfly - 20% Breaststroke - 50% Backstroke - 30%
2) Find 50% of 5 hours is, 2.5 hours, or 150 minutes

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.