A worker completes \( \frac{3}{5} \) of a work in 12 days. In how many days will he complete \( \frac{3}{4} \) of the work?
At simple interest a sum of ₹6,400 becomes ₹8,320 in 3 years. What will ₹7,200 become in 5 years at the same rate?
In the given figure, a circle is inscribed in â–³PQR, such that it touches the sides PQ, QR and RP at points D, E, F, respectively. If the lengths of the sides PQ = 18 cm, QR = 13 cm and RP = 15 cm, then find the length of PD.
A sold an article to B at 25% profit and B furthur sold it to C by earning a certain profit. If the cost price of C is 30% more than the cost price of A, then finds the profit in profit percentage earned by B.