Ratio and Proportion Questions and Lessons

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.

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.

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

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.

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.

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.

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.

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

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.

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