16
Q:

From a salary of an officer, 10% is deducted as house rent, 15% of the rest he spend on children's education and 10% of the balance he spends on clothes. Then, he is left with Rs. 4131. Find his total salary? 

Answer:
Q:

The ratio of earnings of A and B is 4:5. If the earnings of A increase by 20% and the earnings of B decrease by 20%, the new ratio of their earnings becomes 6:5. What are A's earnings?

A) Rs.22,000 B) Rs.27,500
C) Rs. 26,400 D) Cannot be determined
 
Answer & Explanation Answer: D) Cannot be determined

Explanation:
Report Error

View Answer Workspace Report Error Discuss

55 1816
Q:

If the length of a rectangle is increased by 10% and the area is unchanged , then its corresponding breadth must be decreased by?

Answer

Suppose length = 100m and breadth = x m


Area = 100 m


New length = 110m and breadth = (x-y% of x)


Then, \inline 110\times (x-\frac{y}{100}x)=100\times x


\inline \Rightarrow \inline 110\times (1-\frac{y}{100})=100


\inline \Rightarrow \inline 1-\frac{y}{100}=\frac{100}{110}


\inline \Rightarrow \frac{y}{100}=1-\frac{100}{110}=\frac{1}{11}


\inline y=\frac{100}{11}=9\frac{1}{10}%

Report Error

View answer Workspace Report Error Discuss

49 1814
Q:

The tax on an article decreases by 10% and its consumption increases by 10%. Find the effect percent on its revenue?

Answer

10 - 10 - \inline \frac{10\times 10}{100}= -1% %


\inline \therefore Decrease in revenue = 1%

Report Error

View answer Workspace Report Error Discuss

11 787
Q:

In an election, there were two candidates only. The candidate who got 62% of the total votes polled and was elected by a majority of 192 votes. The total number of votes polled was?

Answer

Suppose total votes polled is x


\inline \Rightarrow \inline \frac{62x}{100}=\frac{38x}{100}+192


\inline \Rightarrow \frac{62x}{100}-\frac{38x}{100}=192


\inline \Rightarrow \frac{24x}{100}=192\Rightarrow x=800

Report Error

View answer Workspace Report Error Discuss

36 1303
Q:

After spending 40% machinery, 25% in building , 15% in raw material and 5% on furniture . Harilal had a balance of Rs.1305. Total money with him was?

Answer

[100 - (40+25+5+15)] % of x = 1305


\inline \Rightarrow 15% of x =1305


\inline \Rightarrow \frac{15}{100}\times x=1305


\inline \therefore x=\frac{1305\times 100}{15}=8700

Report Error

View answer Workspace Report Error Discuss

4 1223