A lorry is 500 pounds when empty. What will its weight be if it's loaded with 20 bags of apples, each weighing 60 pounds?
Let's think: If the lorry is loaded with 20 bags of apples, each weighing 60 pounds, it will have an additional weight of 20 * 60 = 1200. The total weight of the lorry after being loaded with the bags of apples will be 500 + 1200 = 1700 pounds.. The answer is: 1700.

In a big box, there are marbles in 4 colors. Inside, there are 20 red marbles. There are three times more green marbles than red. Yellow marbles make up 20% of the green marbles. How many marbles are of a different color if the total of all marbles in the box is three times more than the number of green marbles?
Let's think: There are 3 * 20 = 60 green marbles. There are 60 * 20 / 100 = 12 yellow marbles. In total there are 3 * 60 = 180 marbles. That leaves 180 - 20 - 60 - 12 = 88 marbles of another color in the box.. The answer is: 88.

New York is two-thirds as populated as all of New England. If New England has 2100000 people, calculate the combined population of both states.
Let's think: New York is two - thirds as populated as all of New England, meaning there are 2 / 3 * 2100000 = 1400000 people living in New York. The combined population of both states is 1400000 + 2100000 = 3500000.. The answer is: 3500000.

It takes 15 mink skins to make a coat. Andy buys 30 minks and each mink has 6 babies, but half the total minks are set free by activists. How many coats can he make?
Let's think:
First find the total number of baby minks: 30 minks * 6 babies / mink = 180 minks. Add this to the number of adult minks: 180 minks + 30 minks = 210 minks. Then divide this number in half to find how many aren't set free: 210 minks / 2 = 105 minks. Then divide the remaining number of minks by the number of minks per coat to find the number of coats: 105 minks / 15 minks / coat = 7 coats.. The answer is: 7.