A pile of index cards has a mixture of white, pink, yellow, red, and blue cards.

Question

Some cards are lined, and some are unlined. The total number of cards is
150. 2/5 of the cards are blue, 10 cards are white, and 10 cards are red. Half of
the remaining cards are pink. How many cards are yellow?

Answer 1

i am on six grade. 2/5 of 150 is 60.10+10=20.20+60=80.150-80=70 half of 70 is 35. The answer is 35.

Answer 2

Multiply 150 by 2/5 to determine how many are blue, then add the number of blue, white and red cards, subtract from 150.

60 + 10 + 10 = 80...if half of them are pink, 80 - 40 = 40 yellow cards.

Answer 3

Thank you Reed and Nour