Answer:
288
Step-by-step explanation:
40% divide by 100 will equal 0.4
then multiply 0.4 by 720 which equals to 288
50 : 6 = x : 40 is the proportion
50 : 6 = x : 40
x = 50 * 40 : 6
x = 333.33
--------------------------
check
50 : 6 = 333.33 : 40
8.33 = 8.33
The answer is good
it's the only ans then possible ! ^•,,,•^
x is 44 because
3x+4+x=180
4x=180-4
4x=176
x=44
