Giselle works as a carpenter and as a blacksmith. she earns $ 2 0 $20dollar sign, 20 per hour as a carpenter and $ 2 5 $25dollar sign, 25 per hour as a blacksmith. last week, giselle worked both jobs for a total of 3 0 3030 hours, and earned a total of $ 6 9 0 $690dollar sign, 690. how long did giselle work as a carpenter last week, and how long did she work as a blacksmith?

Carpenter:12 and Blacksmith: 18

Step-by-step explanation: Checked on khan

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