So she is allowed to work no more than 20 hours, but she already worked 13 hours.So what you will do is get 13 and take it away from 20 and that will be your answer.
Hey there,
It take 45 min to complete 75% of the wall
1% = 45 / 75
= 0.6
100 % = 0.6 x 100
= 60 min
It takes her 60 mins or 1 hour to finish building the wall.
Hope this helps :))
~Top♥
4/15, 5/9 and 3/5.
Hope this helps! :)
