Question

a÷b=b÷c=2.4这三个数的和是27.48求这三个数各是多少

Answer 1

b=2.4c
a=2.4b=2.4x2.4c=5.76c
a+b+c
=5.76c+2.4c+c
=9.16c
=27.48
所以 c=3
b=2.4x3=7.2
a=5.76x3=17.28
望采纳，谢谢

Answer 2

解，由已知可列方程:
a+b+C=27.48 (1)
a/b=b/c=2.4 (2)
由(2)式得a=2.4b，c=1/2.4 b，代入(1)式得:
b=27.48/(2.4+1+1/2.4)=7.2
a=2.4×7.2=17.28
c=1/2.4 ×7.2=3
即为所求。

Answer 3

a／b=b/c=2.4,则b=2.4c,a=2.4b=2.4×2.4c
那么a+b+c=5.76c+2.4c+c=9.16c=27.48
c=3,则b=7.2,a=17.28

Answer 4

a÷b＝2.4 a＝2.4b
b÷c＝2.4 b＝2.4c
a＝2.4b,b＝2.4c,a＝2.4×2.4c＝5.76c
a＋b＋c＝27.48
5.76c＋2.4c＋c＝27.48
解得c＝3
b＝3×2.4＝7.2
a＝3×5.76＝17.28
a＝17.28,b＝7.2,c＝3

Answer 5

a÷b＝b÷C＝2.4
a十b十C＝27.48
a＝2.4b，C＝2.4b
则2.4b十b十2.4b＝27.48
5.8b＝27.48，b＝4.7
a＝2.4Ⅹ4.7＝11.28
c＝2.4x4.7＝11.28