Question
What is the main chemical used in the production of
matchsticks?Solution
Red phosphorus is used on the striking surface of matchboxes, where it reacts with the chemicals in the matchstick to ignite the match.
Marks scored by A and B in a test are in the ratio 13:5 respectively. If B had scored 5 more marks, then marks scored by A would be 30% more than that o...
Three numbers are in ratio 3:4:7. If the sum of the squares of those three numbers is 666 then find the sum of the three numbers.
The ratio between two numbers is 1:2. If each number is increased by 8, the ratio between then become 5:6, find the difference between numbers.
If the mean proportion of 0.54 and 0.24 is 'x', then find the third proportion of (x + 8.64) and (2x + 5.28) .
In a factory, the ratio of number of male to female employees are 7: 18. If 27 male employees and 12 female employees left the factory, then the ratio b...
The ages of A, B and C are in the ratio of 5:3:7 respectively. If the sum of their ages is 60 years, then find the age of B.
The ratio of the marks obtained by Priya, Neha, and Riya is 4:7:9 respectively. Sheetal scored 5 marks less than Neha. If the difference between Riya’...
In a clothing store, the ratio of shirts to trousers to T-shirts is 2:6:5. After Y trousers are sold, the ratio of shirts to trousers changes to 4:9. Th...
An amount is distributed among A, B, C, and D in the ratio 7:5:9:4 respectively. If the amount received by B is Rs. 1,250, then find the amount received...
A, B and C entered into a partnership by investing in the ratio of 6:3:4. At the end of the year, the total profit is in the ratio of 12:3:8. Find the r...
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