Question
A certain sum of money will be doubled in 4 years at the
rate of simple interest percent per annum is:Solution
SI = (P × R × T)/100 Amount, (A) = P + SI Let P be the principal. SI = 2P – P = P ⇒ P = (P × R × T)/100 ⇒ P = (P × R × 4)/100 ⇒ R = 100/4 = 25%
Radius of base of a hollow cone is 8 cm and its height is 15 cm. A sphere of largest radius is put inside the cone. What is the ratio of radius of base ...
- A piggy bank holds 20-paise, 50-paise and 2-rupee coins in the ratio 15:12:9. The total amount inside is Rs. 3006. How many 50-paise coins are there?
If A:B:C = 2:3:8 and (C - B) = 130, then find the product of 'C' and 'A'.
There are 120 balloons of three different colours in a box. The ratio of red balloons to yellow balloons is 2:3, and the ratio of red balloons to green ...
Three numbers are in the ratio 4:5:6. If the sum of the largest and smallest numbers is 60 more than the middle number, what is the largest number?
Sneha had 900 stickers. She gave 50% of them to Tina and Meena in the ratio of 4:5. What is the difference between the stickers Meena received and the n...
Ratio of the number of pens with Sumit, Rohan, Chetan, Dheeraj and Gagan is 2 : 3 : 4 : 5 : 6 respectively. If two of them have more than 20% of the tot...
The cost of diamond varies directly as the square of its weight. A diamond broke into four pieces with weights in the ratio 1 : 4 : 5 : 6. if the loss i...
- The ratio of men to women in a club is 3:2. If the number of men was 18 less and the number of women was 12 more, then both would be equal in number. Find ...
Relevant for Exams:
