โจ Best Answer โจ
โขใๅฎไพก(700ๅ)ใฎ7ๅฒใโใๅฎไพก(700ๅ)ใฎ0.7ๅใใจใใๆๅณใชใฎใง
ใใ700ๅร0.7๏ผ490ๅ
โฃใใณใผใน(12km)ใฎ25๏ผ ใโใใณใผใน(12km)ใฎ0.25ๅใใจใใๆๅณใชใฎใง
ใใ12kmร0.25๏ผ9km
Mathematics
Primary
Solved
้ฃใใ๐ฆใฎใงๆใใฆใใ ใใ๐๐โโ๏ธ๐โโ๏ธ๐โโ๏ธ
็ญใ
ใฏใฉใ
ใฆใใ
3
ๅฎไพก700ๅใฎๅๅใใๅฎไพกใฎ7ๅฒใง่ฒทใใพใใใ
ใใใใง่ฒทใใพใใใใ
5ๅ
ๅผ
็ญใ
4
12kmใฎใใคใญใณใฐใณใผในใฎใใกใ25%ใๆญฉใใพใใใ
ไฝkmๆญฉใใฆใ ๆฎใใฏไฝkmใงใใใ
0 ๅผ
็ญใ
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