Question

if 8 calculators cost 1960 how much such 13 ?

Answer 1

Let price of one calculator be x

Thus, 8x = 1960
x = 1960/8
x = 245

Thus cost of one calculator is 245

Cost of 13 calculators would be
245 X 13 = 3185

Thus cost of 13 calculators is Rs 3185

Answer 2

1960 ÷8= 245
2415=1 calculator
13=245×13=3185