Answer:
Bob bikes wheels are 20 inches in actual.
Explanation:
Given:
Scale model of the bike =
Wheel of bar model = 4 inches.
We need to find the wheel is how many inches across is actually on his bike.
Solution:
If we need to find the real object dimensions then we need to multiply the model value with the reciprocal of the scaling factor.
In this case the model value of wheel is 4 and reciprocal value of the scaling factor
is 5.
So we can say that;
Actual wheel dimension =
Hence Bob bikes wheels are 20 inches in actual.