Each desk is 60 yuan, and each chair is 25 yuan. The school bought 90 such desks and chairs in total. It cost 3300 yuan, and the table was bought

Each desk is 60 yuan, and each chair is 25 yuan. The school bought 90 such desks and chairs in total. It cost 3300 yuan, and the table was bought

There are x tables and Y chairs,
Then x + y = 90
60x+25Y=3300
have to
x=30
y=60
A: there are 30 tables and 60 chairs

I want 40, 50, 60, 70, 80, 90, 100, thousand, ten thousand English words

forty,fifty,sixty,seventy,eighty,ninety,a hundred,a thousand,10 thousands

How to write the first to the twentieth English words? There are also the 21st, 23rd, 40th, 46th, 50th, 60th, 70th, 80th, 90th and 100th English words

The first, the second, the third, the fourth, the fifth, the sixth, the seventh, the eighth, the ninth, the tenth, the eleventh, the twelfth, the thirteenth, the fourteenth, the fifteenth, the sixteenth, the seventeenth

What are the English words of 60.70.80.90.100

sixty,seventy,eighty,ninety,hundred

11. 12, 13, 18, 19, 20, 30, 40, 50, 60, 70, 80, 90, 100?

one two three four five six seven eight nine ten
1 2 3 4 5 6 7 8 9 10
eleven twleve thirteen forteen fifteen sixteen seventeen eighteen nineteen twenty
11 12 13 14 15 16 17 18 19 20
twenty-one
twenty-one
thirty
thirty
forty
forty
fifty
fifty
sixty
sixty
seventy
seventy
eighty
eighty
ninety
ninety
one hundred
one hundred
The two digit numbers not mentioned can be represented by dozens + a few by imitating 21

Intelligence test, 41,28,27,83, (), 65,36,30,45,54

41 28 27 83 ( ) 65
Solution: 41 - 27 = 14
14 × 2 = 28, which is the number in brackets
So, by analogy, 83-65 = 18
18 × 2 = 36
The answer is: a

Fill in 90%,, 0.7, () (fill in percentage), () (fill in score)

50% 3/10

1, 2, 5, 14, 41, (), ()

122;365
2=1+3^0
5=2+3^1
14=5+3^2
41=14+3^3
122=41+3^4
365=122+3^5

1, 5, 14, 30, 55, ()
A. 91B. 74C. 75D. 125

Because: 5-1 = 4 = 2214-5 = 9 = 3230-14 = 16 = 4255-30 = 25 = 52, so () - 55 = 62 = 36, so the number is: 36 + 55 = 91, so choose: a

3. 5, 14, 55, 274, (), 11500, find the rule

5=3×2-1
14=5×3-1
55=14×4-1
274=55×5-1
1643=274×6-1
11550=1643×7-1
Fill in 1643