Select the correct answerIf a : (b+c)=1:3 ; c : (a + b) = 5 : 7, then b:(a+c) is equal to?Options2 : 11 : 21 : 32 : 3
Question
Solution 1
To solve this problem, we need to use the concept of ratios and proportions.
Step 1: From the first equation, we can write a = 3(b+c)
Step 2: From the second equation, we can write c = 7/5(a+b)
Step 3: Substitute a from equation 1 into equation 2, we get c = 7/5(3(b+c)+b) = 21/5(b+c) + 7/5b
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