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Anonymous users2024-02-07t1, the total weight of the 6 boxes is 102
Because after selling 1 box, the biscuits are 2 times the bread, so that the remaining bread is x, you can know that 3x is equal to the total weight left, so you know that the total amount should be divisible by 3 after subtracting a box, try one by one, see which one can be divisible, you know that the box is sold, and then 3 can get x, plus that box is the original.
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Anonymous users2024-02-06I've done both, and the easy way is to exclude unreasonable options. You don't even give you options, and I can't say specifically!!
1) The remaining biscuits are 3 times the size of bread, and the total weight sum is 102 is also 3 times, so the sold cookies must be 3 times more. Vaguely remember that this would rule out two options. Just bring the other two in and give them a try.
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Anonymous users2024-02-05The first question, after selling a box of bread, the total amount of biscuits is twice that of the bread, that is, the total amount of remaining bread and biscuits can be divided by three, first calculate the total amount of purchase is 8 + 9 + 16 + 20 + 22 + 27 = 102, if the bread sold is 8 kg, then the remaining 102-8 = 94, can not be divisible by 3, excluded;
9 kg, 102-9=95, excluded;
16 kg, 102-16=86Exclude;
20 kg, 102-20=82Exclude;
22 kg, 102-22=80Exclude;
27 kg, 102-27 = 75, is divisible by three, so what is sold is 27 kg of bread, 75 3 = 25, and 9 + 16 = 25, so the bread is 9, 16, 27, for a total of 9 + 16 + 27 = 52 kg.
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Anonymous users2024-02-048.(1) No, 13, 23, 16, 26, etc. are not multiples of 3 (2) Correct.
3) Correct. At least 2 more people.
10.**Can't see clearly.
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Anonymous users2024-02-039 and 2 more people, and it will be just finished.
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Anonymous users2024-02-02Two more, three-eight-twenty-four.
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Anonymous users2024-02-0122 divided by 3 equals 7 to 1 and 2 more people are enough.
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Anonymous users2024-01-31Solution: 2x+5/6 + x+11+x 0 multiplied by 12 on both sides to get the denominator:
2(2x+5)+3(x+11)+12x=019x+43=0
x=-43/19
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Anonymous users2024-01-30When x is equal to -, the values of 2x+5 sixths and x+11+x are inverses of each other?
x=-142/19
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Anonymous users2024-01-29Solution: (2x+5) 6+(11+x) 4+x=02(2x+5)+3(11+x)+12x=04x+10+33+3x+12x=0
19x=-43
x=-43/19
Another solutionThe values of 6 2x+5 and 4 x+11+x are inverse to each other, then 2x+5+4/6 x+11+x=0
Multiply both sides by 12 at the same time to get.
2(2x+5)+3(x+11)+12x=04x+10+3x+33+12x=0
19x=-43
x = -43/19
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