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2 solved questions on Profit and Loss
CSS 2024General Science & AbilityQ. 8
(a) A man purchases a car in an amount of Rs. 2,400,000 in which he pays one-fourth extra as profit. Find the original amount of car and the amount of profit. (b) Twelve men can complete a job in twenty-four days. After four days four person quit. In how many days this job will be completed by the remaining persons. (c) The shadow of a 10 m tall tree is falling on a high rise building and its height is 100 m. If the tree is 20 m away from the wall, at what distance from the wall is the light source? (d) There are three cars and start moving in such a way that car A and B are moving opposite with speed 60 and 100 km/h. Car C is moving perpendicularly to both with speed 80 km/h. What is distance after 15 minutes between (i) A and B (ii) A and C (iii) B and C?
#cssnexus #Profit and Loss #Time and Work #Similar Triangles
CSS Nexus6 Nov 2026
CSS 2023General Science & AbilityQ. 8
(a) Ali buys an oven for Rs. 36800 and sells it at a gain of 8.5%. For how much does he sell it? (b) A card is drawn at random from a box containing 12 cards numbered 1, 2, 3, 4, 5, ..., 12. Find the probability of drawing (i) '8', (ii) an even number, (iii) a perfect square, (iv) a negative number and (v) a number less than 13. (c) The scintillation nuclear radiation detector detects the alpha rays per second. When the energy of the alpha rays (Eα) in MeV increases, the number of counts (Nc) on the detector also increases linearly as shown in the table below: Eα (MeV): 0.25, 0.45, 0.65, 1, 1.4; Nc: 17500, 23500, 29500, 40000, 52000. Draw the graph of Nc as a function of Eα (MeV) and find the energy of unknown alpha ray if the number of counts are 31600. (d) The y is directly proportional to x² and y = m for a particular value of x. Find an expression for y in terms of m, when this value of x is doubled.
#cssnexus #Profit and Loss #Percentage #Probability
CSS Nexus6 Nov 2026