Step-by-step explanation:
It is 64*0.32=20.48 minutes or 20.5 minutes.
Answer:
4x=80 and 5x=100
4x+5x=180
9x=180
1/9 (9x)=1/9 (180)
x=20
4(20)=80
5(20)=100
d =7.6