Levi has 5 lemons. Jayden has 6 more lemons than Levi. Jayden has one-third as many lemons as Eli has while Eli has one-half as many lemons as Ian has. How many lemons do they have in all?
Let's think: Jayden has 5 + 6 = 11 lemons. Eli has 11 x 3 = 33 lemons. Ian has 33 x 2 = 66 lemons. Thus, the 4 of them have a total of 5 + 11 + 33 + 66 = 115 lemons.. The answer is: 115.

Three schools organized a science fair competition and invited students from all the schools to develop ideas and present them before a panel of judges selected by all the schools competing in the science fair. There were 50 students from Know It All High School at the competition, 3/5 times as many students from Karen High as Know It All High School, and twice the combined number of students from the first two schools that came were from Novel Corona High School. Calculate the total number of students at the competition?
Let's think: If 50 students came from Know It All High School, then Karen High, which had 3 / 5 times as many students as Know It All High School, had 3 / 5 * 50 = 30 students at the fair. The total number of students from Know It All and Karen high schools is 50 + 30 = 80 students. If Novel Corona had twice the combined number of students from Know It All and Karen high schools, then it had 2 * 80 = 160 students at the competition. The total number of students at the competition is 80 + 160 = 240.. The answer is: 240.

Jill bought 5 packs of red bouncy balls and 4 packs of yellow bouncy balls. Each package contained 18 bouncy balls. How many more red bouncy balls than yellow bouncy balls did Jill buy?
Let's think: Jill bought 5 packs * 18 red balls = 90 red balls. Jill bought 4 packs * 18 yellow balls = 72 red balls. Jill had 90 red 72 yellow = 18 more red balls.. The answer is: 18.

Andrew holds a bake sale to fundraise for charity. The bake sale earns a total of $400. Andrew keeps $100 to cover the cost of ingredients. He donates half of the remaining total to the local homeless shelter, and the other half to the local food bank. Andrew also decides to donate $10 from his own piggy bank to the local homeless shelter. How much money in total does Andrew donate to the homeless shelter?
Let's think:
After paying off the cost of ingredients, Andrew has $400 - $100 = $300. Since half of the money goes to the homeless shelter, the shelter receives $300 / 2 = $150. After contributing some of his own money, Andrew donates $150 + $10 = $160 to the shelter.. The answer is: 160.