Solve for x and y where 5/x-1 +1/y-2 & 6/x-1 - 3/y-2 =1 where X is not equal to 1

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

Need solving this second acceleration problem.

Which shows a reasonable estimation for 124% of 42 using the distributive property?