The cost of 3 notebooks is ₹84. Find the cost of one notebook.
Computing the cost of one notebook :
Given, cost of 3 notebooks =₹84
Cost of 1 notebook =843=₹28
Thus, the cost of one notebook is ₹28.
Two notebooks and one pencil cost ₹ 35, while 3 notebooks and four pencils cost ₹ 65. Calculate the cost of one notebook and one pencil.
If 5notebooks cost ₹105, then find the cost of 7 notebooks.