Simplify :
\(-20 \div \frac{4}{7} \,\text{ of }\, 55\frac{1}{8} \times \frac{9}{5} - \left(\frac{6}{7} + 1\right)\)
A person borrows ₹75,000 for 3 years at 7% simple interest. He lends it to B at 5% for 3 years. What is his loss (₹)?
A certain sum amounts to ₹29,282 in 4 years at 10% p.a. When the interest is compounded yearly. What is the simple interest (in ₹) on double of the sume of five years' time at the same rate?
Study the following bar graph that shows the number of students enrolled for different courses in institutes A and B during 5 years, and answer the question that follows.
The total number of students enrolled in A during 2014 and 2016 is what percentage of the total number of average students enrolled in B during the 5 years (correct to one decimal place)?
The length of a rectangle is three-fifth of the radius of a circle. The radius of the circle is equal to the side of a square, whose area is 6400m2. The perimeter (in m) of the rectangle, if the breadth is 15 m, is: