Mahsulot narxi dastlab \( 30 \% \) ga ko'tarildi, so'ngra \( 10 \% \) ga arzonlashdi. Mahsulot narxi dastlabki narxga nisbatan necha foizga ko'tarilgan?
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Dastlabki narxni 100 deb olamiz. Narxning \( 30 \% \) ga ko'tarilishi natijasida yangi narx \( 100 + 30 = 130 \) ga teng bo'ladi. So'ngra ushbu narxning \( 10 \% \) ga arzonlashishi tufayli yangi narx \( 130 - 13 = 117 \) ga teng bo'ladi. Endi dastlabki narxga nisbatan o'zgarishni hisoblaymiz: \( 117 - 100 = 17 \). Bu, demak, mahsulot narxi dastlabki narxga nisbatan \( 17\% \) ga ko'tarilgan. Shunday qilib, natijada mahsulot narxi dastlabki narxga nisbatan \( 17\% \) ga ko'tarilgan.