Question

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M A T H Q U E S T I O N ' S


1. If y is directly proportional to X and Y =10 when X =2, Find, i) The value of y when x=10, ii)The value of x when y=60.

i) y=50 and ii) x=12

i) y=60 and ii) x=6

i) y=65 and ii) x=8


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2.If y is directly proportional to x and y=5 when x=2,Find the value of y when x=7. 

y =12.5

y = 17.5

y= 13.5


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3. If y is directly proportional to ^ and y =18 when x =3, Find i) The value of y when x=5 ii)The value of x when y=32.

i) y= 40 and ii) x = ± 6

i) y=50 and ii) x= ± 4

i) y=78 and ii) x= ± 9


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4. If y is directly proportional to ^ and y=21 when x=2,Find the value of y when x=4.

y = 90

y = 84

y = 70


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5. Four identical taps can fill a tank in 70 minutes. Find the time taken for 7 such taps to fill the same tank.

30 minutes

40 minutes

20 minutes






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Answer 1

Answer:

1 ka (i) because in first x is 5 times and in (ii) y is 6 times

2 ka 17.5 because x is 3.5 times

3 and 4 is wrong

5 ka 40 minutes

Answer 2

Step-by-step explanation:

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