√45 = √9√5 = 3√5
√20 = √4√5 = 2√5
3√5+2√5-√5=4√5
answer = 4√5
:)
We know that:
time=distance/speed
if the tortoise speed is x m/min, then since 0.5 m/hr=1/120 m/min
18/x=23+18/(x+1/120)
solving for x we get:
x=0.08 m/min
speed of hare is:
(0.08+1/120)=0.088 m/min
Second one
1/16
3/8 divided by 1/6=1/16
I would say 13 3/4 but dont take me for my word
