Question

The length of the 2 black rods is equal to that of the 3 grey rods. The length of the white rod is equal to the total length of the 2 black and 3 grey rods as shown in the figure.Therefore the length of the grey rod is ______ the length of the white rod

Answer 1

Step-by-step explanation:

Let length of black rod = x

length of grey rod = y

length of white rod = z

According to the question, 2x = 3y and z = 2x+3y

then, z =2x+3y

=3y+3y = 6y

so, y = z/6

It means, grey rod is 1/6 of the length of the white rod.