Ratio and Proportion Questions and Lessons

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Answered on 05/12/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Ratio and Proportion

Find the mean proportion of 25, 64?

Chandan Singh

Math Learning In easy Way

Mean proportion = square root of (25*64) = 40 Ans.

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Answered on 05/12/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Ratio and Proportion

If 0.75 : x :: 5 : 8, then what is the value of x?

Chandan Singh

Math Learning In easy Way

(x * 5) = (0.75 *8) X=6/5 = 1.20 Ans.

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Answered on 19/11/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Ratio and Proportion

What must be subtracted from each term of 5 : 7, so that it is equal to 3 : 4?

Richa Kumari

-1

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Answered on 08/12/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Ratio and Proportion

The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number...

Rama Krishna Ravulapalli

Rs. 1,90,085.

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Answered on 07/12/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Ratio and Proportion

If x : y : z, show that x : z = (square of x) : (square of y)?

Shambhavi S.

As we know that , x:y:z , this implies that, y^2=x*z. Simplifying x:z=x^2:y^2, we get, y^2=x*z, which is the same as above. Thus, they are equal.

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Answered on 06/12/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Ratio and Proportion

What must be added to each of 7, 16, 43 and 79 so that they become proportion? Find the number, which...

Sarvajeet Kumar

Tutor

5.

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Answered on 06/12/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Ratio and Proportion

If (4a + 9b) : (4c + 9d) = (4a - 9b) : (4c - 9d), show that a : b = c : d?

Sarvajeet Kumar

Tutor

(By Componendo and Dividendo) 8a:18b=8c:18d or a:b = c:d.

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Answered on 22/11/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Ratio and Proportion

If x:y = 9:10, find the value of (5x + 3y) : (5x - 3y)?

RAM MOHAN A.

The answer is 5:1. SOL :- x : y=9 : 10==> 10 x=9 y==> 5 x = 9 y/2, substituting 9y/2 for 5x in ( 5 x + 3 y) : (5 x - 3 y) gives 5: 1

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Answered on 25/11/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Ratio and Proportion

If A:B = 4:5, B:C = 6:7 and C:D = 14:15, find A:D?

Nagesh Guledagudda

Programming Passionate

(B/C ) * (C/D)= (6/7) * (14/15) => B/D = 4/5 => (A/B)*(B/D)=(4/5)*(4/5) => A/D = 16/25.

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Answered on 27/11/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Ratio and Proportion

If a:b = 5:3, find the value of (5a + 8b) : (6a - 7b)?

Shyam

Tution

49/9 or 5.44

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