l varies directly as M and l is equal to 5, when M =2/3.find l when M=16/3. Answer of this question is 40.
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Answered by
31
this is the simple ratio and proportion question
we know that I vary directly as M
means.... that they must have fixed ratio
5/(2/3) = X/( 16/3) = 40
we know that I vary directly as M
means.... that they must have fixed ratio
5/(2/3) = X/( 16/3) = 40
ayush961:
Thanku
Answered by
55
L varies directly with M
⇒ L = kM where k is a constant
Solve k:
L = 5 when M = 2/3
5 = k (2/3)
k = 5 ÷ 2/3
k = 5 x 3/2
k = 7.5
Form the equation:
L = 7.5M
Find L when M = 16/3:
L = 7.5M
L = 7.5 (16/3)
L = 40
Answer: L = 40
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