Answer: $1.32 more.
Step-by-step explanation:
To calculate this, remember that there are 1000 grams in one kilogram.
So, Karega bought 25 grams, which is 25/1000 kilograms (or 1/40)
Samadhi bought 100 grams, which is 100/1000 kilograms (or 1/10)
Therefore, you can multiply 17.60 (the price per kilogram) times each fraction that they bought.
17.60 * 1/40 = $0.44
17.60 * 1/10 = $1.76
You then subtract 1.76 by 0.44 to find out how much more Samadhi paid than Karega, which is 1.32.