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ATQ, Let the cost price of the mobile = 'm' And the cost price of the Headphone = 'h' m × 125/100 + h × 120/100 – (m × 120/100 + h × 110/100) = 550 5m+10h = 55000 m + 2h = 11000
The ratio of Rama’s to Shyama’s age is 1 : 2 and the sum of their age 81 years. What will be the ratio of their ages after 7 years?
The ratio of the ages of A and B is 3:5. After 5 years, the ratio will be 7:11. Find the present age of B.
Six years ago, the age ratio of A to B was 5:6. In nine years, their age ratio will become 8:9. Determine the difference between their current ages.
The difference between the compound interest and simple interest on a certain sum for 2 years at 12% per annum is 144. Find the principal amount.