Advertisements
Advertisements
प्रश्न
If x : y − 5 : 4 and 2 : x = 3 : 8, find the value of y.
Advertisements
उत्तर
x : y = 5 : 4
and 2 : x = 3 : 8
Then, `"x"/"y" = 5/4` ...(i)
and `2/"x" = 3/8` ...(ii)
`"x" = (2 xx 8)/3 = 16/3`
Now put the value of x in eq. (i)
`"x"/"y" = 5/4`
y = x `xx 4/5`
y = `16/3 xx 4/5 = 64/15`
The value of y is `64/15` or approximately 4.27.
APPEARS IN
संबंधित प्रश्न
Divide Rs. 1290 in to A, B and C such that A is `2/5` of B and B : C = 4 : 3.
Find sub-triplicate ratio of x3 : 125y3
A man's monthly inoome is Rs 5,000. He saves every month a minimum of R~ 800. Find the ratio of his:
monthly savings to monthly expenses.
Find the compounded ratio of the following:
`sqrt 8 : 4 , 3 : sqrt 5` and `sqrt 20 : sqrt 27`
Find: The reciprocal ratio of 8: 15.
Find the mean proportional between 3 and 27
The ratio of the number of boys to the number of girls in a school of 560 pupils is 5 : 3. If 10 new boys are admitted, find how many new girls may be admitted so that the ratio of the number of boys to the number of girls may change to 3 : 2.
The ratio of zinc and copper in an alloy is 7 : 9. If the weight of copper in the alloy is 12.6 kg, find the weight of zinc in it.
A typist has to type a manuscript of 40 pages. She has typed 30 pages of the manuscript. What is the ratio of the number of pages typed to the number of pages left?
Given below is a Mathematical term.
Find the ratio of consonants to vowels in the term.
