Question

The sum of 3 number is 138. If the ratio
between the first and the second is 2:3 and
that between the second and the third be
5:7, find the second number. *​

Answer 1

Answer:

a : b = 2 : 3

b : c = 5 : 3

Therefore, a : b : c = [Math Processing Error]2×5:3×5:3×3

= 10 : 15 : 9

According to the question,

a + b + c = 136

=> 10x + 15x + 9x = 136

=> 34x = 136 => x = [Math Processing Error]13634=4

Therefore, b = 15x = [Math Processing Error]15×4 = 60

Plz Brainlist my answer.

Answer 2

Answer:

70

Step-by-step explanation:

sum=138

a:b=2:3

b:c=5:7

Therefore, a : b : c =2 x 5:7 x 5:7 x 3

=10:35:21

a+b+c=138

10x +35x+21x=138

66 x=138

x=2.09=2[approximate]

second number=35x=35 x 2=70