Question

10. In two types of stainless steel, the
.ratio of chromium and steel are
2:11 and 5:21, respectively. In
what proportion should the two
types be mixed, so that the ratio of
chromium to steel in the mixed
type becomes 7:32?
(1) 2:3
(2) 3:4
(3) 1:2
(4) 1:3​

Answer 1

Answer:

option 2 is correct. 3:4 is the answer

Answer 2

Answer:

option 3 is correct 2 is wrong