Question

The expression 62.4d−210 gives the number of Indian rupees you receive when you exchange $d at the local currency exchange.
How many Indian rupees do you receive when you exchange $13

Answer 1

@skullpatrol

Answer 2

Any ideas?

Answer 3

Hint:

Let r = number of rupees.

Answer 4

$$\Huge r=62.4•d-210$$

Answer 5

Now substitute 13 for d and calculate r.

Answer 6

$$\Huge r=62.4•13-210$$

Answer 7

so it would be 601.2

Answer 8

Have you any idea why '210' is subtracted in the given equation? Watch out if you go to India and exchange your dollars for rupees.