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00:00:00 Introduction
00:01:52 Question 1 From the two acute angles of a right triangle, one angle is 10 (degrees) less than the other. Find both the acute angles by using Cramer's rule.

00:11:53 Question 2 In a quiz, Abdullah correctly replied 15 out of 20 questions from literature and science, getting Rs.125. If every correct literature reply is credited Rs. 5 and every correct science reply is credited Rs. 10, then find the number of correct replies of literature and science separately.

00:21:04 Question 3 If Asad bought 3 notebooks and 2 books paying Rs. 600 and Iman bought 4 notebooks and 1 book paying Rs. 550, find the cost of each notebook and book? (Use Cramer's rule).

00:29:55 Question 4 Sum of ages of two sisters Sundas and Zenab is 22 years. If Sundas is 1 year older than twice the age of Zenab. Find the ages of both the sisters by using matrix inversion method.

00:42:14 Question 5 Two trucks have capacities of 10 tons and 12 tons. They made a total of 20 round trips to haul 226 tons of sand to the community park. How many round trips did each truck make?

00:52:54 Question 6 To make 20 kg of aluminum alloy with 70% aluminum, a metallurgist wants to use two metals with 55% and 80% aluminum content. How much of each metal should he use

01:04:56 Question 7 Soybean meal contains 16% protein and corn meal contains 9% protein. How many pounds of each should be mixed together in order to get a 350-lb mixture that is 12% protein?

01:16:19 Question 8 The perimeter of a lot is 190 m. The width is one fourth of the length. Find the dimensions.

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