Radha spends 40% of her salary on food, 20% on house rent, 10% on entertainment and 10% on conveyance. If her savings at the end of a month are Rs.1500, then her salary per month (in Rs.) is
Options:
A . Rs.6000
B . Rs.7500
C . Rs.8000
D . Rs.10000
Answer: Option B Answer: (b) Radha's total percentage expenditure = (40 + 20 + 10 + 10)% = 80% Percentage savings =100 – 80 = 20% Now, 20% of her total salary = 1500 Her total salary = ${1500 ×100}/20$ = Rs.7500 Using Rule 20, Here, Monthly income = $100/{100 - (40 + 20 +10 +10)} ×1500$ = $150000/{100 – 80} = 150000/20$ =Rs.7500
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