[求助]请教两道prep数学题

1. 1kg of coffee bleed consists of x kg of A coffee and y kg of B coffee, cost of bleed C=6.5x+ 8.5y, is x<0.8?

(1)y>0.15

(2)C>=7.3

这个题目的思路是什么呀？

2. Set S consists of Five consecutive integers, and set T consists of seven consecutive integers, Is median of Set S equals Median of Set T?

(1) Median of S = 0

(2) Sum of Set s = Sum of set T

（2）条件不包含（1）条件么？

等NN解答

2. Set S consists of Five consecutive integers, and set T consists of seven consecutive integers, Is median of Set S equals Median of Set T?

(1) Median of S = 0

(2) Sum of Set s = Sum of set T

（2）条件不包含（1）条件么？

第二个条件只是说 和相等 列出式子来 只是5x=7y  s可以使 5 6 7 8 9 t可以使 2 3 4 5 6 7 8  和都是35 但是median 不等