Kesha sharpened 4 colors of pencils for her teacher. she sharpened equal amounts of red and green pencils. then she sharpened twice as many blue and yellow pencils in equal amounts. how many of the 42 pencils were yellow?

Darcy deposited $390 into a savings account. as long as the account balance remains at or above $150, she does not have to pay a service fee for the account. for how many months can she withdraw $40 a month without having to pay service fees? a) 3 b) 5 c) 6 d) 9