Mathematics Practice Test

To solve this, we need to find the total cost and total weight, then divide. Total cost: 5(200) + 4(144) = P1576. Total weight: 5 + 4 = 9 kilos. Average price per kilo: 1576 / 9 = P175.11 (rounded to two decimal places).

To calculate simple interest, we use the formula: I = P * r * t, where I is interest, P is principal, r is annual interest rate, and t is time in years. Here, P = 15,000, r = 5.5% = 0.055, and t = 108/365 years. Plugging in the values: I = 15,000 * 0.055 * (108/365) = 244.11. Therefore, the correct answer is P244.11.

The circumference is the distance around the edge of a circle. It's analogous to the perimeter of other shapes. The formula for circumference is C = 2?r, where r is the radius of the circle. Understanding circumference is crucial for many practical applications, from calculating the length of materials needed to surround a circular object to more complex problems in physics and engineering involving rotational motion.

Ancient civilizations used shadows cast by the sun to estimate the heights of objects. This method, notably used by Thales to measure the height of the Great Pyramid of Giza, relies on the principle of similar triangles. Understanding this technique demonstrates the practical application of geometry in ancient times and shows how natural phenomena were used for mathematical calculations. This method is a prime example of how mathematical concepts can be applied to solve real-world problems using observable natural phenomena.