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

Richa Kumari

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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

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

Shyam

Trainer

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

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

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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Answers 10 Comments Answered on 25/11/2016 Tuition/Class IX-X Tuition Tuition/Class IX-X Tuition/Mathematics Ratio and Proportion

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... read more

The ratio of the number of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls be 20 % and 10 % respectively, what will be the new ratio? read less

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... read more

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

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 is the same as above. Thus, they are equal.

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