Pravin has ₹1612 with him. He divided it amongst his sons Rishi and Shan and asked them to invest it at 8% rate of interest compounded annually. It was seen that Rishi and Shan got same amount after 17 and 18 years respectively. How much (in ₹) did Pravin give to Rishi?
A sales man offers the following scheme discount on the sale of pencils in his shop:
'Buy 20 and get 5 free'. What is the percentage of his scheme discount?
The cost price of a laptop is ₹78,200. If the loss percentage is 44%, then what is the
selling price (in ₹) of the laptop?
Find the average speed of Sanjay, who covers the first 150 km in 4 hours and the next 250 km in another 4 hours.
Mukund invests a sum of ₹5400 and Sachin invests a sum of ₹9400 at the same rate of simple interest per annum. If, at the end of 4 years, Sachin gets ₹960 more interest than Mukund, then find the rate of interest per annum (in percentage).
400 pears were bought at ₹1230 per hundred and were sold at a profit of ₹980. Find the
selling price (in ₹) per dozen of pears.
If at same rate of interest, in 2 years, the simple interest is ₹44 and compound interest is ₹45, then what is the principal (in ₹)?
Two trains are moving in opposite directions at speeds of 60 km/h and 50 km/h. The length of one train is 430 m. The time taken by them to cross each other is 44 seconds.
The length (in m) of the other train, correct to 2 decimal places, is:
There are 49 members in group A, 35 members in group B and 31 members in group C.
All the members of these groups went to a restaurant. The average amount spent on each member of group A, B and C is ₹106, ₹141 and ₹226, respectively. The total average amount (in ₹) spent per member is:
The average weight of 27 students of a class is 53 kg. If the weight of the teacher is included, the average rises by 700 grams. Find the weight (in kg) of the teacher.
X can complete a task in 15 days, and Y can complete the same task in 20 days. If X and Y work on alternate days starting with X, in how many days will the work be completed?