The correct option is C 240 rupees
Cost of one packet of chips is 30 rupees.
We need to find the cost of 8 such packets.
That is, we need to find the value of 8×30.
To find the value of 8×30, we find 8×3 first and then write one zero on the right of the result that is obtained.
We know that 8×3=24.
So, 8×30=240.
Therefore, the cost of 8 packets of chips is rupees 240.