l varies directly as m and l is equal to 5, when m = 2/3 . Find l when m = 16/3
Solution:.
l ∝ m
l = km
Where k = +ve proportionality constant
l/m = k
5/(2/3) = k
15/2 = k
To find l when m = 16/3 we use the value of k
l = km
l = (15/2)(16/3)
l = 40
✦ Try This: l varies directly as m and l is equal to 4, when m = 5/6 . Find l when m = 11/6
l ∝ m
l = km
Where k = positive constant
l/m = k
4/(5/6) = k
10/3 = k
To find l when m = 11/6 we use the value of k
l = km
l = (10/3)(11/6)
l = 55/9
☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 13
NCERT Exemplar Class 8 Maths Chapter 10 Problem 65
l varies directly as m and l is equal to 5, when m = 2/3 . Find l when m = 16/3
Summary:
l varies directly as m and l is equal to 5, when m = 2/3. I = 40 when m = 16/3
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