Math, asked by arushidiksha, 9 months ago

The ratio of ages of Kunal and Deepesh is 3:5. After 10 years this ratio becomes 5:7.
What is the present age of Deepesh?
(IMO 2011)
(A) 20 years (B) 25 years (C) 50 years (D) 15 years

sohailanjum2018: hello,

sohailanjum2018: please check your options please

arushidiksha: option number (B) is correct

arushidiksha: answer is 25

sohailanjum2018: where is my mistake plzz tell

arushidiksha: really I don't know

sohailanjum2018: ok

Answers

Answered by sohailanjum2018

Answer:

Step-by-step explanation:

hello dear,

let the age of = x

according to question

3x+5x+10 = 5x+7x

8x +10 = 12x

10 = 12x -8x

4x = 10

x = 10/4

age of deepesh = 10/4*5

25/2 years

thank you..........

arushidiksha: 50/2 hona chahiye

sohailanjum2018: but how? please check it

arushidiksha: I don't know

arushidiksha: that's okay

arushidiksha: it's okay **

arushidiksha: I did it

arushidiksha: after ten years toh dono ka age increase hoga toh aap only ek ka hi kiye hai yhi pe mistake hai

arushidiksha: 3x+5x+10=5x+7x+10

arushidiksha: aise hota

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