Lucy has 4 more than 1/3 the number of pairs of socks as her sister. Lucy has at most 9 pairs of socks. How many pairs of socks does her sister have?

at most 15 pairs of socks

Step-by-step explanation:

Let the number of pair of socks of her sister be , and let the number of pairs Lucy has be .

Since , Lucy has 4 more than 1/3 the number of pairs of socks as her sister, this means that

   .............................. equation 1

Also ,  Lucy has at most 9 pairs of socks , this means that

....................................... equation 2

Equating the two equations , we have

multiply through by 3

subtract 12 from both sides

Therefore , the sister has at most 15 pairs of socks

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3