Final answer:
Josh bought a total of 1800 grams of fruit, after converting 1.5 kilograms of oranges to 1500 grams, and 15,000 centigrams of apples to 150 grams and adding it to the 150 grams of grapes.
Step-by-step explanation:
To calculate the total amount of fruit Josh bought in grams, we need to convert all quantities to the same unit of measurement, which is grams. First, we know that 1.5 kilograms of oranges is equivalent to 1500 grams (since 1 kilogram equals 1000 grams). Next, he bought 150 grams of grapes, which are already in the correct unit. Lastly, 15,000 centigrams of apples need to be converted to grams. There are 100 centigrams in a gram, so 15,000 centigrams is equal to 150 grams.
Now, we can add these amounts together to find the total:
Oranges: 1500 grams
Grapes: 150 grams
Apples: 150 grams
Adding them up (1500 + 150 + 150) gives us a total of 1800 grams of fruit.