If a - b = 10 and ab =-21, then what is the value of $a^{3} - b^{3}$?
1). 316
2). 370
3). 185
4). 158
If $\frac{1}{3}\left(\frac{12x}{5} - \frac{1}{2}\right) + \frac{6}{5}$ = $\frac{7}{6}$, then what is the value of x?
1). $\frac{1}{6}$
2). $-\frac{1}{6}$
3). $\frac{1}{5}$
4). $-\frac{1}{5}$
The compound interest earned in two years at 8% per annum is Rs 4160. What is the sum (in Rs) invested?
1). 24000
2). 25000
3). 30000
4). 20000
A man travelled a distance of 50 km in 8 hours. He travelled partly on foot at 5 km/hr and partly on bicycle at 7 km/hr. What is the distance (in kms) travelled on foot?
1). 20
2). 25
3). 15
4). 30
Two labourers A and B are paid a total of Rs. 750 per day. If A is paid 150 percent of what is paid to B, how much (in Rs) is B paid?
1). 450
2). 250
3). 300
4). 500