[Question]Ral is twice as old as Suri. In 3 years, Suri's current age will be 16. What is Ral's current age?
[Answer]If Suri will be 16 in 3 years, that means she is 16 - 3 = 13 years old now. Rai is twice as old as Suri, so she is 2 * 13 = 26 years old now. The answer is 26.

[Question]The school has 14 boys and 10 girls. If 4 boys and 3 girls drop out, how many boys and girls are left?
[Answer]There are 14 boys - 4 boys = 10 boys left. There are 10 girls - 3 girls = 7 girls left. In total there are 10 boys + 7 girls = 17 boys and girls left. The answer is 17.

[Question]Tate finishes high school in 1 year less than normal. It takes him 3 times that long to get his bachelor's degree and Ph.D. How many years did he spend in high school and college?
[Answer]He finished high school in 4 - 1 = 3 years. It takes him 3 * 3 = 9 years to finish tertiary education. So he spends 3 + 9 = 12 years on this education. The answer is 12.

[Question]John chops down 30 trees. From each tree, he can make 25 planks. A table takes 15 planks to make and sells for $300. He paid $3000 for all the labor. How much profit did he make?
[Answer]
He got 30 * 25 = 750 planks. So he can make 750 / 15 = 50 tables. That means he makes 50 * 300 = $15000. So his profit was 15000 - 3000 = $12000. The answer is 12000.