You spend 5/6 of the money in your pocket on new clothes for school. The amount you spend on jeans for school is 2/5 of the total amount you spend on all your school clothes.
What fraction of the original amount of money in your pocket do you spend on jeans?
If the amount of money you spend in total is 5/6, and you spend 2/5ths of that on jeans, then 2/5 of 5/6 is what you want to get. To get that, we simply multiply the two to get 10/30 or 1/3 by dividing both the numerator and denominator by 10