Question

Topic: Variation
1) A batch of bottles were packed in 25 boxes with 12 bottles in each box. If the same batch is packed using 20 bottles in each box, hoe many boxes would be filled? 2) s is directly proportional to √t and s = 30 when t = 36. Find the constant of variation and equation of variation 3) Write the symbol of variation : a) The wavelength of sound ( l ) and its frequency ( f ) are in inverse variation 4) The cost of sugar is directly proportional to its weight.12kg of sugar costs ₹138. Find the cost of 5 kg of sugar​

Answer 1

Answer:  1. if 20 bottles of water were packed in each box, 15 boxes will be filled

               

4. The cost of 5kg of sugar = 57.5