Question

10 saal pahle b ki umra c ke umra ka 10 guni thi yadhi unke wartaman umra ka anupat 4:1 hai to b ki umra btaiye​

Answer 1

c ki wartaman umra x pakar lete hai.

Toh fir b ki wartaman umra 4x hogi kyu ki unke umar 4:1 ke anupat mein hai.

Toh 10 saal pehle b ki umra 4x-10 hogi.

Aur 10 saal pehel c ki umra x-10 hogi.

Prashna ke anusar, 10 saal pehle b ki umra c ki umra ka 10 guna tha.

iska matlab,

4x-10 = 10 (x-10)

4x-10 = 10x - 100

4x-10x = 10-100

-6x = -90

x = -90/-6

x = 15

c ki umra 15 saal hai

b ki umra hai 4x = 4*15= 60

Toh b ki umra 60 saal hai.

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