Final answer:
The difference in the price of the calculators and registers is rupees 310.
Step-by-step explanation:
To find the difference in the price of the two items, we need to subtract the cost of the calculators from the cost of the registers. The cost of the calculators is rupees 735, and the cost of the registers is rupees 425. Subtracting rupees 425 from rupees 735 gives us rupees 310.
Therefore, the difference in the price of the two items is rupees 310.