For the following questions answer them individually
Rupa invested P in a scheme offering simple interest at the rate of 12% p.a. If the difference between the interest earned at the end of three years and that earned at the end of five years was 2880/-, what is the value of ‘P’ ?
A car runs at the speed of 40 when not serviced and runs at 65 kmph when serviced. After servicing the car covers a certain distance in 5 hours. How much approximate time will the car take to cover the same distance when not serviced ?
In a vessel there is 40 litres mixture of milk and water. There is 15% water in the mixture. The milkman sells 10 litres of mixture to a customer and thereafter adds 12.5 litres of water to the remaining mixture. What is the respective ratio of milk and water in the new mixture ?
The cost price of an item is two-third of its selling price. What is the gain/loss percent on that item?
18 men can complete a project in 30 days and 16 women can complete the same project in 36 days. 15 men start working and after 9 days they are replaced by 18 women. In how many days will 18 women complete the remaining work ?
What approximate value will come in place of question mark (?) in the given questions? (You are not expected to calculate the exact value).
344 ÷ 4.99 + 144.08 ÷ 8.89 =?
$$\sqrt ?$$ x 359.88 ÷ 12.01 = 289 - 109.992
43.99 x 20.001 - 1439 ÷ 6 = ?
459.85 + 519.82 = ?% of 1399.92
40 % of 249 ÷ 4 + ? = 6.9992