destinywashere101
18.03.2020 •
Mathematics
The glee club needs to raise money for the spring trip to Europe, so the members are assembling holiday wreaths to sell. Before lunch, they assembled 15 regular wreaths and 15 deluxe wreaths, which used a total of 135 pinecones. After lunch, they assembled 15 regular wreaths and 20 deluxe wreaths, using a total of 160 pinecones. How many pinecones are they putting on each wreath?
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Ответ:
Regular: 4
Deluxe: 5
Step-by-step explanation:
15x + 15y = 135
15x + 20y = 160
5y = 25
y = 5
15x = 135 - 15(5)
15x = 60
x = 4
Ответ:
12
Step-by-step explanation: