Ravi travels 300 km. partly by train and partly by car. He takes 4 hr. to reach, if he travels 60 km. by train and rest by car. He will take 10 minutes more if he were to travel 100 km. by train and rest by car. the speed of the train is:

A trader marks his goods at 20% above cost price. If he allows a discount of 5% what is his final profit%?

Cost price of 25 chairs equals the selling price of 20 chairs. Find the profit %.

The product of two consecutive odd numbers is 399. Find the lower of them.

The price of $$ {4{1\over2}}$$ meter of cloth is Rs.$$ {60{3\over4}}$$. Find the cost per meter.

By selling 90 chocolates for Rs. 160, a chocolate trader loses 20%. How many chocolates should he sell for Rs. 96 to make a profit of 20%?

The ratio of ages of Jai and Joy is 5:2. The sum of their ages is 63. After 9 years what will be the ratio of their ages?

Find the cost in rupees for carpeting a room 65dm× 30 dm at Rs. 45 per sq.m