Question

If x and y varies inversely as each other and x=2 when y=40.Find x when x=20.

PLS HELP ME...........
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Answer 1

Answer:

given that x = 2 and y= 40

we have to find y when x = 20

so,

x= 2 | x

y = 40 | 20

2×40=x×20

80 = 20x

x = 80/20

x= 4

Answer 2

Given:

x and y varies inversely as each other and x=2 when y=40

To Find:

Find y when x=20

Step-by-step explanation:

• When two numbers are said to be inversely proportional then the product of two numbers will be a constant.

• Here it is said in the question that x and y are inversely proportional to each other so the equation becomes$k=y\times x$ where k is a constant .
• As when x=2 y s given to be 40 so $k=y\times x\\k=40\times 2=80$.
• As now we have the equation we can find the value of y at when x=20 $80=y\times 20\\y=\frac{80}{20} =4$.
• So y=4 is obtained .

The answer is y=4