Answer:
14.9 min
Step-by-step explanation:
r=rate
r25=5*7
r25=35
r=35/25
r=1.4
substitution
r160=t*15
t=time
1.4*160=t*15
224=t*15/15
224/15=t
it's 40!
10 x 10 = 100
10 x 4 = 40
6 x 10 = 60
and 6 x 4 = 24 !!
