Chad sold 30 magazine subscriptions.
Solution:
Given, Rebecca sold 11 more magazines subscriptions than chad.
Let the number of magazines sold by chad be "n", then number of magazine sold by Rebecca will be "n + 11"
Given that Laura sold 4 more than Rebecca.
Then, number of magazines sold by Laura will be 4 + n + 11 ⇒ n + 15
Total magazine sold by Laura = 45
Total magazine sold by Chad = ?
Total magazine sold by Laura = n + 15 = 45
n = 45 – 15 = 30
Since "n" indicates number of magazine sold by Chad. Thus n = 30 means that Chad sold 30 magazine
