*. . .Prof: agr train north sey 300 km ki speed sey chaley or hawa (air) ki speed south sey 500 km ho tou meri age is waqt kia hogi ?

Bht der bad 1 larkey ney kharey ho kr kaha kay ap ki age is waqt 42 saal hay,

Prof; tum ney kesey calculate kia ?

Stdnt: sir, hamarey muhalley may 1 larka hay us ki age 21 saal hay or woh adha pagal hay 🙂