Question 208192
A Boeing 747 jet is approximately 230 ft long and has a
wingspan of 195 ft. If a scale model of the plane is about
40 cm long, what is the model’s wingspan?
:
A ratio equation
{{{230/195}}} = {{{40/x}}}
Cross multiply
230x = 195 * 40
230x = 7800
x = {{{7800/230}}}
x = 33.9 cm is the model's wingspan
;
;
Check solution on a calc:
230/195 ~ 1.18
40/33.9 ~ 1.18