jonesmykenzee
12.11.2019 •
Mathematics
Elena bought 8 tokens for $4.40. at this rate:
1 : how many tokens could she buy with $6.05?
2: how much do 19 tokens cost?
(20 points)
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Ответ:
She can buy 11 tokens
Step-by-step explanation:
8/4.40=x/6.05 (i set this up as a proportion. tokens/price=tokens/price)
4.40x=48.8 (cross multiplied)
x= 11 (divided both sides by 4.40)
Ответ:
The correct answers are:
1) 11
2) $10,45
Step-by-step explanation:
First we must start by analyzing the information we have.
We know that Elena bought 8 tokens for $ 4.40.
Now they ask us to find out how many tokens she could buy with $ 6.05.
Having 3 of 4 incognitas, the most convenient thing is to do a cross-multiplication:
if 8 tokens 4.40
x tokens 6.05
x 4.40 = 8. 6.05
x 4.40 = 48.40
x = 48.40: 4.40
x = 11
In this way we solve the first question.
In the case of the second, we will also do the same since we have 3 of 4 incognitas:
if 8 tokens 4.40
19 tokens x
8.x = 4.40. 19
8x = 83.60
x = 83.60: 8
x = 10.45
In this way we solve the second question.
Ответ:
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