For the following questions answer them individually
The present population of a city is 92,61,000. If it has been increasing at the rate of 5% per annum, find its population 3 years ago.
A man's weekly wage was Rs. 1200, but now he earns Rs. 1800. What is the percent increase in the man's wage?
The ratio of money with Jack and John is 7 : 13, and that with John and Jonas is 9 : 11. If
Jack has ₹6,300, then how much money does Jonas have?
A is twice as efficient as B and takes 45 days less than B to complete a job. Find the number of days in which they can finish the job together.
A dealer buys 50 chairs for ₹50,000 but 20 of them are damaged. He decides to sell each of the damaged chair at 3/4th of the selling price of normal chair. What should be the selling price of normal chair so that he may make a profit of 35% on the whole transaction?
Mohan and Sohan started running from the points P and Q at the same time towards each other. The speeds of Mohan and Sohan are 24km/h and 18km/h respectively. If they meet after 10 min, then what is the distance between P and Q?
A retailer announces a discount of 40% for selling a food processor marked at ₹86,000. The cost price of the food processor is 60% below the marked price. He offers a further discount of 10% if the buyer presents his membership card of the retailer’s store. The profit of the retailer with the membership card scheme is what percentage of the profit of the retailer without the membership card scheme?
An article marked at ₹2,000 is sold with two successive discounts of 20% and 10%. Find the selling price.
A dealer professes to sell his goods at cost price. If by using false weights he gains $$5\frac{5}{19}\%$$, then find the error in weight of 1 kg.
Samantha takes 3 hours to travel from place X to place Y at a speed of 75 miles per hour.
She takes 2 hours to travel from place Y to Z with 30% increased speed. Find her average speed during the entire journey.