If the ratio of the areas of two similar triangle ABC and DEF is 36:81 and EF = 6.9 cm., then BC is equal to –

A man sold a watch at a loss of 5%. If he would have sold it for Rs. 27 more, he would have gained 7%. The cost price of the watch is -

Gagan started a business and Michael joined him after 2 months. Gagan spent Rs.15000 while Michael spent Rs.27,000. Their one year profit came out to Rs.5000. How much profit will Gagan get?

What is the sum of first 14 natural numbers?

A person swims a distance of 28 km. in the direction of stream in 5 hours and a distance of 13 km. in 5 hours against the stream. What is the velocity of the stream?

Anu invested Rs. 15000 at the rate of interest 10% p.a. for one year. If the compound interest is compounded at every six months, what amount will Anu get at the end of the year?

X can do a piece of work in 6 days while Y can do the same work in 5 days. If the total amount to be given for this work is Rs. 660, what will be the share of Y, if both do the work together?

In a division sum, the divisor is ten times the quotient and five times the remainder. If the remainder is 46, find the dividend.