Joshua, Jose, and Albert are collecting rocks. Joshua collected 80 rocks while Jose collected 14 fewer rocks. Albert has collected 20 more rocks than Jose. How many more rocks did Albert collect than Joshua? Give the rationale and then the answer.
Let's think step by step. Jose collected 80 - 14 = 66 rocks. Albert collected 66 + 20 = 86 rocks. Thus, Albert collected 86 - 80 = 6 more rocks than Joshua.. The answer is: 6.

Robe's car broke and he used $10 from his savings to pay for the repair. Before the repair, he bought 2 kinds of spare parts. A corner light that costs twice the price of the repair fee, and two brake disks; each disk cost thrice the price of the corner light. After that, he had $480 savings left. How much money did Robe have saved before his car broke? Give the rationale and then the answer.
Let's think step by step. The corner light cost $10 x 2 = $20. Each brake disk costs $20 x 3 = $60. So, the total price of the brake disks is $60x 2 = $120. He spent $10 + $20 + $120 = $150 for the repair. Therefore, Robe has saved $480 + 150 = $630 before his car broke.. The answer is: 630.

Maria is a saleswoman at a flower shop. On the first day, she sold 30 tulips and 20 roses. The next day, she doubled the previous day's sales. On the third day, she sold only 10% of the tulips sold on the second day and 16 roses. The price of one tulip is $2 and one rose is $3. How much did Maria earn over these three days? Give the rationale and then the answer.
Let's think step by step. On the second day, Maria sold 30 * 2 = 60 tulips. She also sold 20 * 2 = 40 roses the second day. On the third day, Maria sold only 10 / 100 * 60 = 6 tulips. Over these three days Maria sold 30 + 60 + 6 = 96 tulips. She also sold 20 + 40 + 16 = 76 roses. So on the tulips Maria earned 96 * 2 = $192. And on roses Maria earned 76 * 3 = $228. In total, over these three days, Maria has earned 192 + 228 = $420.. The answer is: 420.