Question 92

The length of a rectangular plot is 20 m more than its breadth. If the cost of fencing the plot at Rs.26.50 per metre is Rs.5300, what is the length of the plot in metres ?

Solution

Let say , Breadth is b.

So, Length = (b+20).

So, Perimeter of rectangular plot is =$$2\left(b+20+b\right)=\left(4b+40\right)\ m.$$

So, $$\left(4b+40\ \right)\times26.50=5300$$

or, $$4b+40\ =\frac{5300}{26.5}=200.$$

or,$$b+10\ =50.$$

or, $$b=40.$$

So, Length is 60 m.

C is correct choice.

Create a FREE account and get:

Download RRB Study Material PDF
45+ RRB previous papers with solutions PDF
300+ Online RRB Tests for Free

CAT Quant Questions | CAT Quantitative Ability

CAT Profit And Loss Questions CAT Arithmetic Questions CAT Coordinate Geometry Questions CAT Quadratic Equations Questions CAT Probability, Combinatorics Questions

CAT DILR Questions | LRDI Questions For CAT

CAT Selection With Condition Questions CAT DI Miscellaneous Questions CAT Coins and Weights Questions CAT Venn Diagrams Questions CAT Charts Questions

CAT Verbal Ability Questions | VARC Questions For CAT

CAT Grammar and Sentence Correction Questions CAT Para Summary Questions CAT Verbal Ability Questions CAT Reading Comprehension Questions CAT Miscellaneous Questions

Follow us on

Boost your Prep!

Download App