標題:
math question! help pls!
發問:
1. The contents of each box has a value. The total of the values is shown alongside a row or beneath a column. Which number should replace the question marks? http://i198.photobucket.com/albums/aa20/mathewchow123/mathquestion4.jpg <-- Picuture
最佳解答:
□◇☆□? □□◇☆? ◇☆□□? ◇☆☆◇ 158 151 151 151? From 4th row, 2(☆ + ◇) = 158 ☆ + ◇ = 79 ‥‥‥ ① From 1st column, 2(◇ + □) = 151 ◇ + □ = 75.5 ‥‥‥ ② From 2nd column, 2☆ + ◇ + □ = 151 ‥‥‥ ③ 2☆ + 75.5 = 151(sub ② into ③) 2☆ = 75.5 ☆ = 37.75 ‥‥‥ ④ ◇ = 41.25(Sub ④ into ②) □ = 34.25(Sub ④ into ①) From 4th column, ? = ☆ + ◇ + 2□ = 37.75 + 41.25 + 2(34.25) = 147.5 Answer: □◇☆□147.5 □□◇☆147.5 ◇☆□□147.5 ◇☆☆◇ 158 151 151 151 147.5 2007-05-12 20:41:19 補充： Corrextion:◇ = 41.25(Sub ④ into ②)□ = 34.25(Sub ④ into ①)Should be:◇ = 41.25(Sub ④ into ①)□ = 34.25(Sub ④ into ②)
其他解答:
math question! help pls!
發問:
1. The contents of each box has a value. The total of the values is shown alongside a row or beneath a column. Which number should replace the question marks? http://i198.photobucket.com/albums/aa20/mathewchow123/mathquestion4.jpg <-- Picuture
最佳解答:
□◇☆□? □□◇☆? ◇☆□□? ◇☆☆◇ 158 151 151 151? From 4th row, 2(☆ + ◇) = 158 ☆ + ◇ = 79 ‥‥‥ ① From 1st column, 2(◇ + □) = 151 ◇ + □ = 75.5 ‥‥‥ ② From 2nd column, 2☆ + ◇ + □ = 151 ‥‥‥ ③ 2☆ + 75.5 = 151(sub ② into ③) 2☆ = 75.5 ☆ = 37.75 ‥‥‥ ④ ◇ = 41.25(Sub ④ into ②) □ = 34.25(Sub ④ into ①) From 4th column, ? = ☆ + ◇ + 2□ = 37.75 + 41.25 + 2(34.25) = 147.5 Answer: □◇☆□147.5 □□◇☆147.5 ◇☆□□147.5 ◇☆☆◇ 158 151 151 151 147.5 2007-05-12 20:41:19 補充： Corrextion:◇ = 41.25(Sub ④ into ②)□ = 34.25(Sub ④ into ①)Should be:◇ = 41.25(Sub ④ into ①)□ = 34.25(Sub ④ into ②)
其他解答:
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