For the following questions answer them individually
Atul purchased Bread costing ₹20 and gave a 100 rupee note to the shopkeeper. The shopkeeper gave the balance money in coins of denomination ₹2, ₹5 and ₹10. If these coins are in the ratio 5 : 4: 1, then how many ₹5 coins did the shopkeepergive?
The value of $$90 \div 20Â \text{of}Â 6 \times [11 \div 4Â \text{of}Â \left\{3 \times 2 - (3 - 8)\right\}] \div (9 \div 3 \times 2)$$ is:
The average of eleven numbers is 56. The average of first three numbers is 52 and that of next five numbers is 60. The 9th and 10th number are 3 and 1 more than the 11th number respectively. What is the average of 9th and 11th numbers?
The radii of two concentric circles are 12 cm and 13 cm. AB is a diameter of the bigger circle. BD is a tangent to a smaller circle touchingit at D. Find the length (in cm) of AD? (correct to one decimal place)
A train running at $$40\frac{1}{2}$$ km/h takes 24 seconds to cross a pole. How much time (in seconds) will it take to pass a 450 m long bridge?
If $$x^4 + \frac{1}{x^4} = 727, x > 1$$, then what is the value of $$\left(x - \frac{1}{x}\right)?$$
A trader bought 640 kg of rice. He sold a part of rice at 20% profit and the rest at 5% loss. He earned a profit of 15% in the entire transaction. What is the quantity (in kg) of rice that he sold at 5% loss?
A train is to cover 370 km at a uniform speed. After running 100 km,the train could run at a speed 5 km/h less than its normal speed due to some technical fault. The train got delayed by 36 minutes. What is the normal speed of the train, in km/h?