Advertisements
Advertisements
प्रश्न
If `(2"y"+5"x")/(3"y"-5"x")=2 1/2`, find x, if y = 70
Advertisements
उत्तर
`(2"y"+5"x")/(3"y"-5"x")=5/2`
Given y = 70
`(2xx70+5"x")/(3xx70-5"x")=5/2`
⇒ `(140+5"x")/(210-5"x")=5/2`
⇒ 2 × (140 + 5x) = 5 × (210 − 5x)
⇒ 280 + 10x = 1050 − 25x
⇒ 35x = 1050 − 280
⇒ 35x = 770
⇒ x =`770/35` = 22
APPEARS IN
संबंधित प्रश्न
If 3A = 4B = 6C, find: A : B : C.
Find the reciprocal ratio of 3 : 5
Convert the following percentage to fractions and ratio:
125%
Find the ratio of the first quantity to the second.
125 cm, 1 metre
Find the reciprocal ratio of 4 : 7
The ratio of income to the expenditure of a family is 7 : 6. Find the savings if the income is Rs 14000.
Find the simplified form of the following ratio.
15 : 20
Find the simplified form of the following ratio.
12 : 27
Mathematics textbook for Class VI has 320 pages. The chapter ‘symmetry’ runs from page 261 to page 272. The ratio of the number of pages of this chapter to the total number of pages of the book is ______.
The greatest ratio among the ratios 2 : 3, 5 : 8, 75 : 121 and 40 : 25 is ______.
