Question

'x' and 'y' vary inversely as each other.when x =10,y=6.which of following is not a possible pair of corresponding values of 'x' and 'y'?
a)12 and 5
b)15 and 4
c)25 and 2.4
d)45 and 1.3​

Answer 1

(d) 45 and 1.3 Explanation: Since x and y vary inversely, so xy = k (constant) Putting the value of x and y, we get; 10×6 = 60 Now if we observe the options available; Option (a) – 12 and 5 – 12×5 = 60 Option (b) – 15 and 4 – 15×4 = 60 Option (c) – 25 and 2.4 – 25×2.4 = 60 Option (d) – 45 and 1.3 = 45×1.3 = 58.3 Therefore, option (d) is not a possible pair of corresponding values of x and y

Answer 2

'x' and 'y' vary inversely as each other.when x =10,y=6.which of following is not a possible pair of corresponding values of 'x' and 'y'?

a)12 and 5

b)15 and 4

c)25 and 2.4

d)45 and 1.3