Ratio between age of P and Q is 5 : 7. If 2 years ago Q's age was 2 years more than the age of P after 4 years, then find their total age

If $\frac{2a^2 - 3b^2}{a^2 + b^2} = \frac{2}{41}$, then $a : b =$

A, B, C and D enter into a partnership. They invest ₹40000, ₹80000, ₹90000 and ₹120000 respectively. At the end of the first year, B withdraws ₹30,000 and A adds another ₹20,000, while at the end of the second year, C withdraws ₹40,000. In what ratio (in ascending order) will the profit be shared at the end of 3 years?

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If 10% of X is equal to 40% of Y, then the ratio between X and Y is :

The ratio of ages of 2 boys is 3:7. After 2 years, the ratio of their ages will become 5:9. The ratio of their ages after 10 years will be

A bag contains five-rupee, one-rupee, 50-paise, and 25-paise coins in the ratio 3 : 5 : 6 : 8. If the total amount of money in the bag is ₹225. The number of coins of each kind in ascending order :

(A) No. of coins of 25 paise

(B) No. of coins of one rupee

(C) No. of coins of 50 paise

(D) No. of coins of five rupee

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Two numbers are in the ratio 3:5. If 3 is subtracted from the first number and 3 is added to the second number, the ratio becomes 1:3. The sum of the numbers is?