0 Deepak BoraNewbie Asked: July 15, 20202020-07-15T16:53:12+05:30 2020-07-15T16:53:12+05:30In: CBSE, ICSE The monthly pocket money of Ravi and Sanjeev are in the ratio 5 : 7. Their expenditures are in the ratio 3 : 5 . If each saves Rs.80 every month, find their monthly pocket money. 0 ratio and proportion ratio and proportion Share Facebook 1 Answer Voted Oldest Recent Deepak Bora Newbie 2020-07-16T13:40:07+05:30Added an answer on July 16, 2020 at 1:40 pm Let the pocket money be 5x & 7x Expenditure = pocket money- savings ∴ expenditure for ravi = 5x-80 expenditure for sanjeev = 7x-80 (5x-80) : (7x-80) = 3:5 Cross multiplying 5(5x-80) = 3(7x-80) 25x-400 = 21x- 240 4x = 160 ∴ x = 40 ∴ pocket money for Ravi = 5x = 5×40 = Rs. 200 Sanjeev = 7x = 7 × 40 = Rs. 280 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerLeave an answerCancel reply Featured image Select file Browse Add a Video to describe the problem better. Video type Youtube Vimeo Dailymotion Facebook Choose from here the video type. Video ID Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs". Click on image to update the captcha. Save my name, email, and website in this browser for the next time I comment. Related Questions Using the properties of proportion, solve the following equation for x; given x³+3x/3x²+1=341/91 Give x³+12x/(6x²+8) =(y³+27y/9y²+27). Using componendo and dividendo find x : y. Given that a³+3ab²/(b³+3a²b) =63/62. Using componendo and dividendo find a: b. Given x=root(a2+b2) +root(a2−b2) /(root (a2+b2) −root(a2−b2) Use componendo and dividendo to prove that b²=2a²x/x²+1 If x=root(a+x) +root(a−1) /root(a+1) −root(a−1) , using properties of proportion , show that x² – 2ax + 1 ...

Let the pocket money be 5x & 7x

Expenditure = pocket money- savings

∴ expenditure for ravi = 5x-80

expenditure for sanjeev = 7x-80

(5x-80) : (7x-80) = 3:5

Cross multiplying

5(5x-80) = 3(7x-80)

25x-400 = 21x- 240

4x = 160

∴ x = 40

∴ pocket money for Ravi = 5x = 5×40 = Rs. 200

Sanjeev = 7x = 7 × 40 = Rs. 280