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3 years ago

URGENTTEST TOMORROW*

Mathematics

2 answers:

Luden [163]3 years ago

5 0

Answer:

"Dominic lived in Spain for 13 months and Columbia for 7 months."

Step-by-step explanation:

let months stayed in spain be "s" and months stayed in columbia be "c"

We can write 2 equations.

Since, lived in Spain and Columbia for a total of 20 months, we can write:

s + c = 20

Also, since 120 words per month in Spain and 150 words per month in Columbia for a total of 2610 new words, we can write:

120s + 150c=2610

Solving first for s:

s = 20 - c

Putting in 2nd and solving:

120(20 - c) + 150c = 2610

2400 - 120c + 150c = 2610

30c = 210

c = 7

Now,

s = 20 - c = 20 - 7 = 13

"Dominic lived in Spain for 13 months and Columbia for 7 months."

sergejj [24]3 years ago

5 0

Answer:

"Dominic lived in Spain for 13 months and Columbia for 7 months."

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2 years ago

*URGENT*TEST TOMORROW*

URGENTTEST TOMORROW*