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andrejr0330jr
21.07.2019 •
Mathematics
Sakura speaks 150 words per minute on average in hungarian and 190 words per minute on average in polish she once gave cooking instructions in polish sakura spent 5 minutes total giving both instructions and spoke 370 more words in polish than hungarian
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Ответ:
let h time in minutes speaking Hungarian
p + h = 5 equation 1
190 p - 150 h = 370 equation 2
multiply eq. (1) by 150 (both sides)
15 0p + 150 h = 750
190p -150 h = 370
add the two eqiations we get :
190 p + 150p = 370 + 750
340 p = 1120
p= 1120/ 340 = 3.29
3 minutes speaking Polish and 2 minutes speaking Hungarian.
make sure if the number 370 ?? i think it is wrong , it can be 270 because i get a point in the answer
Ответ: