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blondinia [14]
3 years ago
9

A wise man gave his students this riddle; “how old am I if 400 reduced by three times my age is 175

Mathematics
1 answer:
wlad13 [49]3 years ago
4 0
400-3x=175
-3x=-225
x=75 years old
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Answer:

2x +3y=1⇒equation 1

3x=2y+8

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by elimination method,

2x+3y=1 ×2

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13x=26

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