Question

Brother ask his sister for rupees 100 so that he can be 3 times as rich as her sister but the sister tell her brother to give of rupees 400 so that she can be 7 times as rich as a brother how much money do the brother and sister have now

Answer 1

Answer:120 RUPEES

Step-by-step explanation:

B+100=3S,

S+400=7B,

S+400=7(3S-100),

S+400=21S-700,

1100=20S,

S=55,

B=3x55-100,

B=65,

B+S=55+65=120