Given A = 18 and B : C = 4 : 3. If the average of A and C is 21, what is the value of B ?
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Answer:
B=24
Step-by-step explanation:
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Answer: B = 32
Step-by-step explanation:
Given, A=18 , B=4x & C=3x
Average of A and C = 21
which is equal to (18+3x)÷2
=> 18+3x = 21×2 = 42
=> 3x = 42-18 = 24
=> x = 24/3 = 8
Therefore B = 4 × 8 = 32.
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