1) If the 10 kg sugar is Rs. 880 . Find the cost of 15 kg sugar.....
Solution,
let the required cost be Rs x
Here , the quantities of sugar and their cost are direct proportion
So, 10 : 15 = 8: x
Hence , the cost of sugar is Rs.1320
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2) 50 students in a hostel have provisions for 21 days . How long would it last for 75 students?
Solution,
Let the required number of a day = x
Here , the number of student and the number of days are in inverse proportion.
•°• 50 : 75. = x : 21
Hence, the provisions last for 14 days for75 students
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