Let the CP of a dozen of apples and a dozen of bananas be Rs. $x$ and Rs. $y$ respectively. According to the question, 6x + 8y = 1400 Dividing both sides by 2, 3$x$ + 4$y$ = 700 Multiplying both sides by 5, we have, 15$x$ + 20$y$ = 700 $\times$ 5 = Rs. 3500
Nandkishore gives 35% of the money he had to his wife and gave 50% of the money he had to his sons. Remaining amount of Rs. 11,250 he kept for himself. What was the total amount of money Nandikishore had ?