Mathematical olympiad in grade four and five.

1, Tang Priest ate1/24;

Note: Tang+Pig =1/2; Tang+sand =1/3; Tang+Sun = 1/4

Add both sides of the equal sign: 3 Tang+pig+sand+sun = 13/ 12.

And because Tang+pig+sand+sun = 12/ 12.

Get 2 Tang =112; So don ate 1/24.

2. Mr Wang is 40 years old;

Note: Mr. Wang's age is 65438+ 0/3 of the total age of four people.

Mr. Li's age is 65438+ 0/4 of the total age of four people.

Mr. Zhao's age is 65438+ 0/5 of the total age of four people.

So Mr. Yang's age is1-1/3-1/4-1/5 =13/60.

The sum of four people's ages is 60x26/ 13= 120.

Results: Mr. Wang: 40; Mr. Li: 30; Mr. Zhao: 24/.