Lea walked 1/2 mile in 1/3 hour. How long will it take lea to walk 2 1/4 miles ?

Step-by-step explanation:

Velocity = distance/time

1/3 h=20m

V=0.5/20=0.025m/m

So time= distance/velocity

T=2.25/0.25=90m

90m= 1.5h

I did it also by logic by using these steps:

1/2*(1/2 mile in 1/3 hour) = 1/4 mile in 1/6 hour

we have 9 quarter in 2 1/4

So 1/6 * 9 =1.5h

hope this helps !

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.