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Suppose 2 kg of sugar contains 9 x 10° crystals., , How many sugar crystals are there in (i) 5 kg of sugar? (ii) 1.2 kg of sugar?, , Answer :, (i) Let the number of sugar crystals in 5 kg of sugar be x., , The given information in the form of a table is as follows., , Amount of sugar (in kg) | 2 |, , , , Number of crystals, , The amount of sugar and the number of crystals it contains are directly proportional to each, other. Therefore, we obtain, 2 5, , 9x10" x, 5x9x10°, yee =, , Hence, the number of sugar crystals is 2.25 x 107., , (ii) Let the number of sugar crystals in 1.2 kg of sugar be y. The given information in the form of a, table is as follows., , , , __ 1.2x9x10°, y=, , =5.4x10°, , Hence, the number of sugar crystals is5.4* 10°,