Subject: mathqa
Question: for 2 consecutive yrs , my incomes are in the ratio of 4 : 7 and expenses in the ratio of 3 : 5 . if my income in the 2 nd yr is rs . 42000 & my expenses in the first yr in rs . 24000 , my total savings for the two - year is
Option: 
A: s . 10000
B: s . 7000
C: s . 8000
D: s . 9900
Answer: B