Question

A textbook store sold a combined total of 272 biology and math textbooks in a week. The number of biology textbooks sold was three times the number of math textbooks sold. How many textbooks of each type were sold?
Number of biology textbooks sold: ?

Number of math textbooks sold: ?

Answer 1

Answer:

biobooks = 204

mathbooks = 68

Step-by-step explanation:

the bio textbooks make up 3 parts

the math textbooks make up 1 part

the denominator therefore is 4

so biobooks = 272 * 3/4

and mathbooks = 272 * 1/4 (272 : 2 : 2)

note that calculating the mathbooks 1st is easier, bc you can then multiply by 3 to get the biobooks.

add both numbers up to proof that the sum is 272

(would really appreciate the brainliest)