In a certain code language, 'she needs some medicines' is written as ' 1542 ', 'take some water' is written as ' 849 ', 'he needs rest' is written as '713', and 'she is water' is written as '269'. How will 'take medicines' be written in that language?

85

Given; In a certain code language, 'she needs some medicines' is written as ' 1542 ', 'take some water' is written as ' 849 ', 'he needs rest' is written as '713', and 'she is water' is written as '269'. 

So,

She  needs  some  medicines  =  1  5  4  2

take  some  water  =  8  4  9

he  needs  rest  =  7  1  3

she  is  water  =  2  6  9

Thus,

take i coded as 8  and medicine is coded as 5

85.