A pile of index cards has a mixture of white, pink, yellow, red, and blue cards.
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?
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.
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.
Thank you Reed and Nour
To determine the number of yellow cards, we need to follow these steps:
Step 1: Calculate the number of blue cards.
We know that 2/5 of the cards are blue. So, we multiply the total number of cards (150) by 2/5:
Blue Cards = 150 * 2/5 = 60
Step 2: Calculate the number of white and red cards.
We are told that there are 10 white cards and 10 red cards. Therefore, the total number of white and red cards is:
White Cards + Red Cards = 10 + 10 = 20
Step 3: Calculate the number of remaining cards.
To find the number of remaining cards, subtract the number of blue cards and the number of white/red cards from the total number of cards:
Remaining Cards = Total Cards - (Blue Cards + White Cards + Red Cards)
Remaining Cards = 150 - (60 + 20) = 70
Step 4: Calculate the number of pink cards.
It is given that half of the remaining cards are pink. So, we divide the number of remaining cards by 2:
Pink Cards = Remaining Cards / 2 = 70 / 2 = 35
Step 5: Calculate the number of yellow cards.
Finally, to find the number of yellow cards, we subtract the sum of blue, white, red, and pink cards from the total number of cards:
Yellow Cards = Total Cards - (Blue Cards + White Cards + Red Cards + Pink Cards)
Yellow Cards = 150 - (60 + 10 + 10 + 35) = 150 - 115 = 35
Therefore, there are 35 yellow cards in the pile.