Final answer:
To determine the total amount of fruit Josh bought, convert all weights to grams and sum them up. He bought 1500 grams of oranges, 150 grams of grapes, and 150 grams of apples, totaling 1800 grams of fruit.
Step-by-step explanation:
How to Calculate the Total Amount of Fruit Bought
To solve the question of how much fruit Josh bought in grams at the farmer's market, we must first convert all quantities to the same unit: grams. For the oranges, we convert 1.5 kilograms to grams knowing that 1 kilogram equals 1000 grams.
Thus, Josh bought 1500 grams of oranges (1.5 x 1000). The grapes are already in grams, so that's 150 grams. Lastly, the apples are in centigrams, so we convert 15,000 centigrams to grams by dividing by 100 since there are 100 centigrams in a gram, resulting in 150 grams of apples.
Adding up all the amounts, Josh has bought a total of 1500 grams + 150 grams + 150 grams, which equals 1800 grams of fruit in total.
If we consider the example of Marcy who has a similar conversion task, she has 1.5 kilograms of beef and needs to convert it to grams to ensure she has enough for her 900-gram recipe.
Using the same conversion method, Marcy has 1500 grams of beef. Subtracting the 900 grams needed for the recipe from the 1500 grams she has, she realizes she will have 600 grams of meat left over.
This exercises the concept of unit conversion and basic arithmetic operations such as addition and subtraction to quantify amounts correctly.