In 3 years, Jayden will be half of Ernesto's age. If Ernesto is 11 years old, how many years old is Jayden now? Give the rationale and then the answer.
Let's think step by step. Ernesto = 11 + 3 = 14. Jayden = 14 / 2 = 7 in 3 years. Now = 7 - 3 = 4. Jayden is 4 years old.. The answer is: 4.

The total average age of three friends is 40. Jared is ten years older than Hakimi, and Molly's age is 30. How old is Hakimi? Give the rationale and then the answer.
Let's think step by step. The total age for the three friends is 40 * 3 = 120. If Molly's age is 30, then Jared and Hakimi have a total age of 120 - 30 = 90. Let's say the age of Hakimi is x. Since Jared is 10 years older than Hakimi, Jared is x + 10 years old. Jared and Hakimi's total age is x + (x + 10) = 90. This translates to 2x = 90 - 10. 2x = 80. Hakimi's age is x = 80 / 2. This gives us x = 40, which is Hamkimi's age.. The answer is: 40.

In Sam's collection, there are ten more black pens than blue pens and twice as many blue pens as pencils. There are also eight pencils and two fewer red pens than pencils. How many pens in all are there in Sam's collection? Give the rationale and then the answer.
Let's think step by step. 8 x 2 = 16 are blue pens. 16 + 10 = 26 are black pens. 8 - 2 = 6 are red pens. Therefore, there are 16 + 26 + 6 = 48 pens in all in Sam's collection.. The answer is: 48.