谁帮我解一道英文的数学题the ratio of Stan`s age to Fred`s age is 7:12.in 3 year time,their total age will be 101.what is Fred age 17 years from now
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谁帮我解一道英文的数学题theratioofStan`sagetoFred`sageis7:12.in3yeartime,theirtotalagewillbe101.whatisFredage17y
谁帮我解一道英文的数学题the ratio of Stan`s age to Fred`s age is 7:12.in 3 year time,their total age will be 101.what is Fred age 17 years from now
谁帮我解一道英文的数学题
the ratio of Stan`s age to Fred`s age is 7:12.in 3 year time,their total age will be 101.what is Fred age 17 years from now
谁帮我解一道英文的数学题the ratio of Stan`s age to Fred`s age is 7:12.in 3 year time,their total age will be 101.what is Fred age 17 years from now
设Stan是7x岁,则Fred为12x
由题可得7x+3+12x+3=101,则x=5
所以现在Fred是60岁,17年以后就是77岁
答:77岁
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谁帮我解一道英文的数学题the ratio of Stan`s age to Fred`s age is 7:12.in 3 year time,their total age will be 101.what is Fred age 17 years from now
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