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Cross-Curricular Mathematics

In groups, read and solve the following math problems.

Example:

I traveled to Argentina and bought a pair of shoes there. I paid $250 for them. Then, I realized that here in Chile they were 4O% cheaper. How much do the shoes cost in Chile?

How could I solve it?

$250 is the total, or 100% of the cost of the shoes. I have to subtract 40%of the total to get the result, so I must do the following:

I multiply 250 by 40; then, I divide the result of this by 100, in order to get the value of"x"

I then sustract that result from 25O, and come up with the answer.

250\times40=10.000

10.000\blacktriangleleft100=100\blacktriangleright250-100=150\blacktriangleright The shoes in Chile cost $150

Now it's your turn!

a. I went to a café with my best friend. We wanted to have a cappuccino and a sandwich. In total, the bill cost $32. I thought that it was too expensive, but my friend told me that in another café a cappuccino with a sandwich cost 65% more, so we stayed there.

How much do the cappuccino and the sandwich cost in the other café?

6Today, the president announced that the price of a subway ticket is going to increase 32% next week. Currently, the subway ticket price is $16.

How much is the subway ticket going to cost next week?


UNIT

3

Lesson 5. Sightseeing

41