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Question

Quantitative Aptitude Question on Commercial Maths

Sumeet spends 10% of his salary on his child’s education, 20% of the remainder on rent and 25% of the balance on garments. Finally, he is left with $ 5,400. What is his salary?

A

$ 10,000

B

$ 11,000

C

$ 12,000

D

$ 13,000

E

$ 14,000

Answer

$ 10,000

Explanation

Solution

Let Sumeet’s salary be \ x.Amountspentonchild’seducation= Amount spent on child’s education = 10% of x= x = 0.1 xRemainingamount= Remaining amount =x– x – 0.1 x = $ 0.9xAmountspentonrent= Amount spent on rent =20% of 0.9x= 0.9x = 0.18xRemainingamount Remaining amount= 0.9x– 0.9x – 0.18x = $ 0.72xAmountspentongarments Amount spent on garments= 25% of 0.72x= 0.72x = 0.18xRemainingamount Remaining amount=0.72x– 0.72x – 0.18x = $ 0.54xAccordingtothequestion, According to the question,0.54x= 0.54x = 5400 ⇒ x = $ 10, 000Hence,Sumeet’ssalary Hence, Sumeet’s salary= 10,000 10, 000
The correct answer is A.