Respuesta :
Answer:
1/20 or 0.05
Step-by-step explanation:
Make common denominators
3/4 --Multiply by 5/5--> 15/20
1/5 --Multiply by 4/4--> 4/20
Then apply to the problem
3/4 spent means 1/4 left
15/20 ---> 5/20 left
Then they spend 1/5 (4/20) of what they have left
(5/20) x (4/20) = 20/400
Simplify
1/20 or 0.05