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The toy store sold two electric toys at the same time, each for 120 yuan. One of them earned 25% and the other lost 25%______ (make or lose)______ Yuan
120 △ 1 + 25%, = 120 △ 125%, = 96 (yuan); 120-96 = 24 (yuan); 120 △ 1-25%, = 120 △ 75%, = 160 (yuan); 160-120 = 40 (yuan); 40-24 = 16 (yuan); answer: the result is a loss, a loss of 16 yuan
A workshop assigned the task of processing a batch of parts to Party A and Party B at a ratio of 4:3. When completing the task, Party A actually processed 4800 parts, more than 15 of the original assigned task. How many parts are there in total?
[4800 ／ (1 + 15)] 44 + 3, = [4800 ／ 65] ／ 47 = 4000 ／ 47 = 7000 (pieces) a: there are 7000 parts planned in this batch
Xiao Li, Xiao Hua and Xiao Dong bought stationery with the same money. Xiao Ming bought five books and four pens, Xiao Li bought two books and six pens, Xiao Dong bought only one, and Xiao Dong bought () pens.
A.9 B.11 C 10 D 12
Party A and Party B cooperate in the production of a batch of parts, and their planned work efficiency is 5: because Party B's work efficiency has been improved by 50%, Party A will produce 30 less parts than planned, and there are () parts in this batch.
Let the unit price of the book be a and the unit price be B
From the meaning of the title, 5A + 4B = 2A + 6B
That is 3A = 2B
We get b = 3 / 2A
Then the money they bring is 5A + 4 * 3 / 2A = 11a
So you can buy 11a / a = 11 books
(2) If the planned production of a is 5a, the planned production of B is 4a
The efficiency of B is 4A + 4A * 50% = 6A
Then B produced 6a-4a = 2A more than before
A less production 30 = 2A, a = 15
The total number is 5 * a + 4A = 9 * a = 9 * 15 = 135
For a three digit number, the sum of the number on the hundred and the number on the ten is 4, the sum of the number on the ten and the number on the individual is 6, and the sum of the number on the hundred and the number on the individual is 10?
The sum of two hundreds, two tens and two bits is 4 + 6 + 10 = 20
20 / 2 = 10
10-4 = 6 bits
10-6 = 400
10-10 = 0 tens
A: the three digit number is 406
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