In school 'ABC', the respective ratio between the number of students in class $8,$ class $9$ and class $10$ in the year $2013$ was $4:5:6.$ If in $2014,$ the number of students in class $8$ and class $9$ increased by $10\%$ and $20\%$ respectively and the number of students in class $10$ decreased by $20\%,$ what was the respective ratio between the number of students in class $8,$ class $9$ and class $10$ in $2014?$

If the length of a rectangle is increased by $15\%$ and the breadth is decreased by $12\%,$ what is the percentage change in the area of the rectangle?

Mr. Shindey had a sum of money which he decided to distribute among his wife, his one son and one daughter. He gave $25\%$ of the total money to his wife and the remaining amount he distributed in the respective ratio of $2:3$ among his son and daughter. If his daughter got $\mathrm{Rs}.24,300,$ how much money did Mr. Shindey have?