Answer:
5
Step-by-step explanation:
Mike buys 3 cans of pop per week and this is one more than 2/5 of the number of cans of juice that he buys.
Let the number of cans of juice be j and let the number of cans of pop be buys be p.
This means that:
p = 1 +2j/5
Make j subject of formula:
p - 1 = 2j/5
=> 2j = 5p - 5
j = ½(5p - 5)
p = 3 (from the question)
Therefore:
j = ½(5 * 3 - 5) = ½(15 - 5)
j = ½ * 10 = 5
Mike buys 5 cans of juice per week.
