Question

17. If 17notebooks cost 221, then the cost of a dozen notebooks ist,
d) 175
c) 156
a) 150
b) 160
​

Answer 1

Cost of 17 notebooks = ₹221

Cost of 1 notebook = ₹ 221/17 = 13

Cost of 12 (a dozen) notebooks = 13*12 = 156

The cost of a dozen notebooks is ₹ 156