Question

Pia spends 40% of her monthly salary on rent, transportation and bills in the respective ratio of 6: 4: 3. If she spends rs. 7800 on the rent, how much is her monthly salary ?

Answer 1

6x=7800
x=7800/6=1300

4x=4(1300)=5200
3x=3(1300)=3900

7800+5200+3900=16900


16900=40y/100
1690000=40y
y=1690000/40
y=42250

her monthly salary is ₹42250

Answer 2

Let her monthly salary be 130x. 40% of her monthly salary = 40/100(130x) = 52x. Let the amounts on rent, transportation and bills be 6y,4y and 3y. 6y=7800=>y=1300
Hence 13y=16900=>13y=52x
=> 52x=16900=> x=325 Hence her monthly salary is
42,250 ruppees.