The correct option is A 7a + b.
Daily spendings of Ranjit = ₹a
Weekly savings by Ranjit = ₹b
Amount spent by Ranjit in one week = ₹7a
So, the total income for one week = Amount spent by Ranjit + Amount saved by Ranjit.
Substituting the values, we get,
Total income for one week = 7a + b