If the ratio of selling price and cost price is 4:5 respectively, then what is the loss percentage?

The price of 6 pencils is Rs. 30 and that of 12 pens is Rs. 120. What is the average price of 50 pencils and 50 pens?

Some amount out of Rs.7000 was lent at 6% per annum and the remaining at 4% per annum. If the total simple interest from both the fractions in 5 year was Rs.1600, find the sum lent at 6% per annum.

If two LED TVs and one mobile phone cost ₹31,000, while two mobile phones and one LED TV cost ₹35,000, then the value of one mobile phone is:

If $$ {3^{4x-y}={3^{x+y}=\sqrt{27}}}$$,  then the value of y is:

What will come in place of question mark(?) in the following number series?
10, 14, 25, 55, 140 (?)

Find measure of central angle of the arc whose length is 22 cm and radius of the circle is 28 cm?

Directions : Given line graph shows the data of male & female population in 5 different cities. Read the data carefully and answer the questions.

What percent of Female population in city C is male population in city E?