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2020ҹԱвÿһ֮ϵģ⼰𰸽6.24

2019-06-24 10:51:22| й

Ϊ˰λȽϺõıҹԱйΪλвÿһϵϰ⼰𰸽λʱ鿴ѧϰ

1. һԾ50ж⣬涨ÿһ3֣һ1֡ijѧ82֣Ե벻?

A.15 B.16 C.17 D.18

2. ijˮ굽ƻIJչƻչÿǧ1.20ԪӲص̵·400ǧף˷Ϊÿֻÿ1ǧ1.5Ԫѹе10%̵Ҫʵ25%ľʣôƻۼÿǧ˶Ԫ?

A.2.3 B.3 C.1.4 D.2.5

3. һΪ36ƽ׵ȷֳ壬ٽƴһ󳤷壬󳤷ıǣ

A.24ƽ B.30ƽ

C.36ƽ D.42ƽ

ο

1.𰸡Bй50жȫԣΪ(50×3-82)÷(3+1)=17ԵΪ50-17=33ȲĶ33-17=16

2.𰸡DйƻۼÿǧxԪչ1000ǧ˼1֡ÿչ1200Ԫ˷ÿ400×1.5=600ԪԳɱÿ1200+600=1800Ԫÿۼ1800×1.25=2250Ԫѹе10%ۼΪÿǧ2250÷1000×(1-10%)=2.5ԪѡD

3.𰸡DйÿΪ36÷6=6ƽסƽԺ󣬶6ƽ׵;Ȼƴɴ󳤷󣬼6÷2=3ƽ׵棬˴󳤷ıΪ36+6×2-3×2=42ƽס

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