For the following questions answer them individually
A box contains 50p and 25p coins in the ratio 9 : 5, amounting to ₹207. Find the number of 50p coins.
The ratio of two numbers is 3 : 8. On adding 8 to both the numbers, the ratio becomes 2 : 5. What is the sum of the numbers?
Arti and Rita can do a job in 8 hours (working together at their respective constant rates) and Arti can do the job alone in 10 hours. In how many hours can Rita do the job alone?
A man travelled a distance of 54 km in 4 hours, partly on foot at 6 km/h and partly on bicycle at 18 km/h. Find the distance (in km) travelled on foot.
The value of $$\left(\frac{1}{2}\right) \left[\left\{-2\left(12 + 2\right)\right\}\right]$$
A sum of ₹$$x$$ amounts to ₹10,483 after 3 years and to ₹12,727 after 7 years at the same rate per cent per annum simple interest. The value of $$x$$ is:
A man sold three-fifth of his articles at a gain of 16% and the remaining at the cost price. Find the gain earned by him in the whole transaction.
With the grant of annual increment, salary of Neera increased from ₹45000 to ₹48150. Find the increase percent.
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