Answered

Discover the answers you need at Westonci.ca, a dynamic Q&A platform where knowledge is shared freely by a community of experts. Discover a wealth of knowledge from professionals across various disciplines on our user-friendly Q&A platform. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.

a store sells small notebooks for $7 and large notebooks for $10. If a student buys 6 notebooks and spends $51, how many of each size did he buy?

Sagot :

Brandtley12
3 small ones and 3 big ones because 3*7=21 plus 10*3=20 =51

Answer:

3 small notebooks and 3 large notebooks

Step-by-step explanation:

The cost spent by the student is the sum of the cost spent on small notebooks and the cost spent on large notebooks.

The cost spent on small note books is the product of the cost per notebook and the number of small note books purchased.

let the number of small and large notebooks purchased be a and b respectively,

a + b = 6

and

7a + 10b = 51

since a + b = 6,

b = 6 - a

7a + 10 (6 - a) = 51

7a + 60 - 10a = 51

-3a = 51 - 60

-3a = -9

a = 3

since b = 6 - a,

b = 6 - 3

= 3

Hence he bought 3 small notebooks and 3 large notebooks.

Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. Westonci.ca is committed to providing accurate answers. Come back soon for more trustworthy information.