fill in the missing term in the following tables if x and y vary directly
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Answered by
17
All of these are in direct proportion.
so,the formula for it is
x1/y1=x2/y2
According to the question
=> 10/5=x1/10
=> 10/5=x/10
=. 10×10=5× x
=. 100=5x
=. 100/5=x
=. 20= x
Hence,it is 20/10
=>. 10/5= 30/y2
=>. 10×y=30×5
=. 10y=150
=. y= 150/10
=. y= 15
Hence it is 30/15.
=>. 10/5=46/y3
=>10×y=46×5
=10y=230
y=230/10
y=23.
Hence,it is 46/23.
Hope it will help you!!
Answered by
6
Here x and y are directly proportional.
⇒ x ∝ y
Finding the constant of proportionality...
⇒ x/y = 10/5 = 2
∴ x = 2y & y = x/2
Thus,
- 10 : 5 :: x : 10
- ⇒ x = 2y = 2 × 10 = 20
- 10 : 5 :: 30 : y
- ⇒ y = x/2 = 30 / 2 = 15
- 10 : 5 :: 46 : y
- ⇒ y = x/2 = 46 / 2 = 23
Thus the answer are 20 at top of 10, 15 at bottom of 15, and 23 at bottom of 46.
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