Question

ABC is a straight line the length of AB is four times the length of BC, AC=75

Answer 1

Step-by-step explanation:

ABC is a straight line.

So AB+BC=AC

let the length of BC be x

AB is four times BC

so AB= 4x

AC = 75

substitute all the values in the first equation

x+4x=75

5x=75

x=75/5 = 15

therefore...

BC=x=15

AB=4x= 4×15=60

Answer 2

Answer:

15

Step-by-step explanation:

Divide AC ➗ 5

AC = 75

75 ➗ 5 = 15

BC=15

AB=4BC=4*15=60