Question

a block of wood was cut into 3. the 3 blocks have a ratio of 3:4:5 if the middle brick has a length of 10, what was the size of the original block of wood?

Answer 1

please i need this help me

Answer 2

since the ratio is 3:4:5
then let their respective lengths be 3x,4x,5x
given the middle brick is of length 10
thus by theprob we have
4x=10
or x=10/4=2.5
hence the length of first brick is 3x =3*.5 =7.5
and that of the third brick =5x =5*2.5 =12.5