A board, 81 cm long is cut into three pieces such that the second piece is twice as long as the first and the third is 6 cm longer than the second.

Answer 1

S=2F

T=6+S= 6+2F

F+S+T =81

F+2F + 6+ 2F = 81

5F = 81-6 = 75

F = 75/5 = 15 = 1st number

S = 30 = 2nd number

T =36= third number