A Laplace expansion along the first row gives
Maria paid $188 for some jeans and t-shirts. a pair of jeans costs $26, and a t-shirt was $16 cheaper than a pair of jeans. if m
aria bought 3 pairs of jeans, how many t-shirts did she buy? explain.
1 answer:
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Answer:
The number of pages that Polina read was 90 and the number of pages that Marcus read was 18
Step-by-step explanation:
Let
x -----> number of pages that Polina read
y ----> number of pages that Marcus read
we know that
x+y=108 ----> equation A
x=5y -----> equation B
substitute equation B in equation A and solve for y
Find the value of x
therefore
The number of pages that Polina read was 90 and the number of pages that Marcus read was 18