Question

Emma bought 100 notebooks and had used 20% of them last semester. Jean had 10% more than that of Emma's remaining notebooks. How many notebooks did Jean have?

A) 70
B) 72
C) 74
D) 76

Answer 1

Emma had 80 notebooks remaining after using 20% of them. Jean had 10% more than Emma's remaining notebooks, so Jean had 88 notebooks.

Step-by-step explanation:

To find the number of notebooks Jean had, we first need to calculate the number of notebooks Emma had remaining after using 20% of them. Emma had 100 notebooks, so 20% of them is 20 notebooks. Therefore, she had 100 - 20 = 80 notebooks left.

Next, we need to find 10% more than 80 notebooks, which is 10% of 80. To find 10% of a number, we can multiply the number by 0.1. So 10% of 80 is 80 * 0.1 = 8 notebooks.

Finally, we add this to the number of notebooks Emma had remaining, 80 + 8 = 88 notebooks. Therefore, Jean had 88 notebooks.