y x (1+5%) x (1+10%)=138.6

👨🏻‍🏫 學術台數學

HIndere

2006-12-03 11:51 pm

y x (1+5%) x (1+10%)=138.6

y =?

回答 (3)

MARCO

2006-12-03 11:56 pm

✔ 最佳答案

y x (1+5%) x (1+10%)=138.6
y(1.05)(1.1)=138.6
1.155y=138.6
y=120
*1+5%=1+5/100=1.05
*1+10%=1+10/100=1.1

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manslug258

2006-12-05 4:16 am

y x (1+5%) x (1+10%)=138.6
=y x 105% x 110%=138.6
y=138.6 x 100/105 x 100/110
y=120

參考: 我

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chiang_markus5

2006-12-04 12:01 am

y x (1+5%) x (1+10%)=138.6
y x 1.05 x 1.1=138.6
138.6/1.1/1.05=y
120=y

參考: me

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