[Question]: Johannes owns a vegetable shop, he sells cabbage for $2 per kilogram. If Johannes was able to earn $30 last Wednesday, $24 last Friday, and $42 today, how many kilograms of cabbage was he able to sell?
[Answer]: Johannes was able to sell $30 / $2 = 15 kilograms last Wednesday. He was able to sell $24 / $2 = 12 kilograms last Friday. And he was able to sell $42 / $2 = 21 kilograms today. Therefore, Johannes was able to sell is 15 + 12 + 21 = 48 kilograms of cabbage.
So the answer is 48.

[Question]: Emily bought a shirt and a coat for $600. What does the shirt cost if it is one-third the price of the coat?
[Answer]: Let X be the price of the shirt. The price of the coat is X * 3. The total amount is X + X * 3 = $600. Combining like terms, we get X * 4 = $600. Dividing both sides by 4, we get X = $600 / 4 = $150.
So the answer is 150.

[Question]: Silvia’s bakery is offering 10% on advanced orders over $50.00. She orders 2 quiches for $15.00 each, 6 croissants at $3.00 each and 6 buttermilk biscuits for $2.00 each. How much will her order be with the discount?
[Answer]:
She orders 2 quiches for $15.00 each so they cost 2 * 15 = $30.00. She orders 6 croissants at $3.00 each so they cost 6 * 2.5 = $18.00. She orders 6 biscuits at $2.00 each so they cost 6 * 2 = $12.00. Her advance order is 30 + 18 + 12 = $60.00. Her advance order is over $50.00 so she can get 10% off so .10 * 60 = $6.00. Her order is $60.00 and she gets $6.00 off so her advanced order will cost 60 - 6 = $54.00.
So the answer is 54.