Question

A metal rod of length 1390cm was cut into 500 shorter rods of equal length to make screws. What is the length of a shorter rod?​

Answer 1

Answer:

2.78cm

Step-by-step explanation:

Assuming the rod can be perfectly cut into 500 rods of equal length and there is no loss of metal length that needs to be taken into consideration, we can say that 500 multiplied by the smaller rod length would equal the total rod length of 1390cm.

i.e 500*x=1390

assuming x is the length of the smaller rod.

Take 500 to the RHS side, we get

x=1390/500

x=139/50 or 139/(5*10)

x=27.8/10                             (if you divide 139 by 5 you get 27.8)

x=2.78cm

Therefore, the length of each smaller rod has to be 2.78cm