Question 1206415
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(a) Together, research vessels A and B collected 500 seawater samples. If vessel B collected 56 more samples than vessel A, how many water samples did each vessel collect? 
(b) Martha had 20 dimes and quarters worth $3.95. How many of each type of coin did she have? 
(c) Find the 4th term of a geometric sequence whose first term is 6 and whose common ratio is 1/3. 
(d) Find the 21st term of an arithmetic sequence whose first term is 9x and whose common difference is x + y.
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        All these problems were solved at this forum yesterday.
        Some of them were solved several times by different tutors.
        See the solutions under these links


(a)
https://www.algebra.com/algebra/homework/word/numbers/Numbers_Word_Problems.faq.question.1206402.html


(b)
https://www.algebra.com/algebra/homework/word/numbers/Numbers_Word_Problems.faq.question.1206400.html


(c)
https://www.algebra.com/algebra/homework/word/numbers/Numbers_Word_Problems.faq.question.1206401.html


(d)
https://www.algebra.com/algebra/homework/word/numbers/Numbers_Word_Problems.faq.question.1206399.html



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