Answer :
By applying direct proportion, the amount of money that these group of friends would pay to buy 18 ice creams is: A. 45 soles.
What is a proportion?
A proportion can be defined as an expression which is typically used to represent (indicate) the equality of two (2) ratios. This ultimately implies that, proportions can be used to establish that two (2) ratios are equivalent and solve for all unknown quantities.
How to calculate the price (amount of money)?
In order to determine the amount of money that these group of friends would pay to buy 18 ice creams based on an offer of 2 ice creams at 5 soles, we would set up a direct proportion equation as follows:
2 ice creams = 5 soles
18 ice creams = x soles
Cross-multiplying, we have:
2x = 18 × 5
2x = 90
x = 90/2
x = 45 soles.
Read more on direct proportion here: brainly.com/question/1266676
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Complete Question:
A group of friends wants to take advantage of the following offer.
Observe. After seeing the offer, they decide to buy 18 ice creams.
How much will they pay for all these ice creams?
A. 45 soles.
B. 20 soles.
C. 16 soles.
D. 10 soles.
