Arihant Expert Team Solutions for Chapter: Practice Sets, Exercise 45: Part III Test of Numerical Ability

What should come in place of the question mark (?) in the following question?

$\frac{7}{5} of\frac{30}{63} of\frac{558}{3}=?$

The area of a circle is $3850$ sq. m. What will be its circumference?

The product of three consecutive numbers is $4080$. What is the least number?

If the perimeter of a rectangle is $180$ m and the difference between the length and the breadth is $8$ m, what is the area of the rectangle?

A and B together can complete a particular task in $6$ days. If A alone can complete the same task in $10$ days, how many days will B take to complete the task if he works alone?

The cost price of an article is Rs. $390$. If it is to be sold at a profit of $3.12\%$, how much would be its approximate selling price?

$17$ articles were bought for Rs. $3910$ and sold for Rs. $4590$. How much was the approximate profit percentage?

$12$ years ago, the ages of A and B were in the ratio $15:13$ respectively. $19$ years from now, the respective ratio of their ages will be $23:22$. What is the sum of their ages at present?