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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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Answers 26 Comments Answered on 06/12/2016 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?

Ankit D. Javeri

Mathematics Tutor

If a:b::c:d then ad= bc. Therefore, 0.75:x::5:8 implies 5x=8*0.75 i.e., x=6/5=1.20.

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Answers 12 Comments 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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Answers 14 Comments 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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Answers 8 Comments 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...

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Answers 10 Comments 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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Answers 8 Comments 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

An Experienced Trainer

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

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Answers 3 Comments 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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Answers 4 Comments 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

An Experienced Trainer

5.

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Answers 2 Comments 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...

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