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There are three numbers a, B and C. the number a is 70 times more than the number B, and the number B is 10 times more than the number C. The sum of three numbers is 244 The total number of students in school a, B and C is 2640, of which the number of students in school a is three times that of School B, and the number of students in school B is 2.5 times that of school C. how many students are there in each of the three schools? Six times of a number, minus the difference of 26, and 26 plus the sum of a number equal to find a number Wang Bodong collected a total of 2750 kg of rice and corn last year, which is 250 kg more than three times that of corn. How many kg are rice and corn?
For a batch of parts, party a finished it in eight hours alone. After party a finished it in two hours, Party B came to participate. Party A and Party B cooperated for another four hours to complete the task. How many hours does it take Party B to finish this batch of parts alone
1 / 8 * 2 = 1 / 4
The remaining 1-1 / 4 = 3 / 4
4 hours a do 1 / 8 * 4 = 1 / 2
B did 3 / 4-1 / 2 = 1 / 4
1/4/4=1/16
1 / (1 / 16) = 16 hours
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