Problem: Elena bought 8 tokens for $4.40. At this rate: a. How many tokens could she buy with $6.05? b. How much do 19 tokens cost? If needed, use the table
a). How many tokens could she buy with $6.05?
Answer:
She can buy 11 tokens
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)
b) How much do 19 tokens cost?
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