Because of the migration of salmon, the total number of salmon in river Trout has increased by ten times the number initially in the river. If there were 500 salmons initially, calculate the total number of fish in the river now.
Let's think: If the number of salmons in the river increased by ten times the number initially there, then 500 * 10 = 5000 new salmons migrated up the river. The total number of salmon in the river now is 5000 + 500 = 5500.. The answer is: 5500.

The mayor commissioned two artists to paint 50 murals around the city. Once the work was completed, Celina was paid $1,000 more than 4 times the amount Diego got. If the mayor paid the two a total of $50,000, how much did Diego get?
Let's think: Let d be Diego's payment. Both artists were paid (1000 + 4 * d ) + d = 50000 dollars. This means that 5d = (50000 - 1000) dollars. Therefore Diego was paid d = 49000 / 5 = 9800 dollars.. The answer is: 9800.

Tommy is making steaks for his family. There are 5 of them in total. If each member wants one pound and the steaks are 20 ounces each, how many does he need to buy?
Let's think: He needs 80 ounces of steak because 5 x 16 = 80. He need 4 steaks because 80 / 20 = 4.. The answer is: 4.

A single kabob stick has 4 cubes of beef. A slab of beef that costs $25 can be cut into 80 cubes. How much must Simon spend to make 40 kabob sticks?
Let's think:
One slab of beef can make 80 / 4 = 20 kabob sticks. To make 40 kabob sticks, Simon needs 40 / 20 = 2 slabs of beef. Simon must spend $25 x 2 = $50.. The answer is: 50.