Problem page a family has two cars. during one particular week, the first car consumed 15 gallons of gas and the second consumed 30 gallons of gas. the two cars drove a combined total of 1500 miles, and the sum of their fuel efficiencies was 70 miles per gallon. what were the fuel efficiencies of each of the cars that week

answer: huh

step-by-step explanation:

a. she will receive a refund of $278.

step-by-step explanation:

the answer is 99.

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