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sweetcorns

DING !!!!11

longger

thanks @!

wuxia1888

.k is a 2-digit positive integer, the value of k is 6 times of the unit digit, what is the value of k? (1). the ten digit is 4 greater than unit digit. (2). the sum of the two digits is a two-digit integer. 确认: .: D 确认: 感觉题有些怪解: 由题知:令k=10x+y,则 10x+y=6y => 2x=y

I do not think u give the right answer. coz according to 1), x and y turn out to be negative. so 1) is not the option. what do u think?

littlegirl

ding!!!!!!

assurance

many  thanks !!!!!

wangyong51

确认:39.63是正确的，因为，54。64是不含税的商品价格，如果含税其成本为54。64＋0。79，而0。79/0.05为应征税商品的含税成本，因此untaxed costs x $,则有 (54.64+0.79)-0.79/5%=39.63。

sportman

many  thanks !!!!!!!

applebees

many  thanks  !!!!

renprince

good!!!!谢谢！！1