Answer: n=451
8*42+3*59-62=n
336+177-62=n
451=n
n=451
Answer:
c, d and f are rational numbers
Step-by-step explanation:

The answer is D, 10. 4 years ago she was 6, so William must have been 1 (1/6 of 6). In 6 years time she will be 16 (10+[4+6 years]).
10/18 because 18-8=10 and the total amount is 18 so the fraction is 10/18