Subject Experts Solutions for Chapter: Ratio and Proportion, Exercise 2: Exercise 2

In the construction of the building, the volume of the wall is in the proportion to the cost of construction. If a wall of volume $24 {\mathrm{m}}^3$ costs $₹18,600$, then find the cost of construction of a wall of volume $36 {\mathrm{m}}^3$

P and Q's expenditures are in proportion to the ratio of their income. P's income is $₹32000$ and his expenditure is $₹24000$. If Q's expenditure is $₹36000$, then find teh income of Q.

If we distribute $57$ chocolates to three friends $A, B$ and $C$ in the ratio $\frac{1}{3}:\frac{1}{2}:\frac{3}{4}$ respectively, then find the number of chocolates received by $C$.

Mr. Kehsva wants to distribute papaya to his three daughters in the ratio $3:5 :7$, such that the eldest daughter gets the highest share, and the youngest daughter gets the least share. If the eldest daughter gets $300 \mathrm{g}$ more than that of the younger, then find the total weight of the papaya distributed. 

Mr Kalyan and his wife Mrs Ahalya use different two-wheelers. The quantity of petrol they use in litres is in proportion to the ratio of the number of kilometres they travel in a month. Mr Kalyan uses $24 \mathrm{L}$ of petrol and he travels a distance of $1200 \mathrm{km}$. If Mrs Ahalya travles $800 \mathrm{km}$, then find the number of litres of petrol that she used in a month.

At a given point of time, the heights of a tree are in proportion to the length of the shadows of trees. A tree of height $25.6 \mathrm{m}$ casts a shadow of $32 \mathrm{m}$. If the shadow of the another tree at that of a point is $48 \mathrm{m}$, then find the height of that tree.

Savings of A and B are in proportion to the ratio of their income. A's income is $₹15,000$ and his saving is $₹5,000$. If B's saving is $₹15,000$, then find the income of B.

If $4\mathrm{a}=3\mathrm{b}, \mathrm{find} \left(7\mathrm{a}+9\mathrm{b}\right):\left(4\mathrm{a}+5\mathrm{b}\right)$.