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Given that Ammonium sulphate contains 20% nitrogen, it means that in one ton (1000 kg) of Ammonium sulphate, there are 200 kg of nitrogen (1000 kg * 20% = 200 kg). To calculate the cost per unit of nitrogen, we divide the total cost (Rs 640) by the quantity of nitrogen (200 kg): Cost per unit of nitrogen = Rs 640 / 200 kg = Rs 3.2/kg N Therefore, the correct answer is (b) Rs 3.2/kg N.
If A = (7)1/3 + (7) -1/3, then the value of {3A3 – 9A} will be:
√4096 + √(?) + 13 – 29 = 148
if a2 + b2 + c2 = 2(4a -5b -9c)-122 , then a-b-c = ?
If, 4x2 + y2 + 12x + 6y + 18 = 0, then find the value of (2x + y)/(y + 6x).
If a + b = 56 and (a – b)² = 496, find the value of the product of a and b.
The speed of a car is 25% more than that of a bike. Both of them start from a same point. After travelling for 4 hours, the speed of the bike is increas...
√(92×8 ×52+700) = ?
