Questões de EFAI Matemática

Pedro is buying clothes online on a foreign website. Clothing prices on this site are in US Dollars (US$). Pedro bought two pieces of clothing on the website: a shirt for US$ 24.00 and a pair of shorts for US$ 20.00. After the purchase, he wanted to know how much he paid in reais (R$). To do this, he saw that R$ 4.00 is equivalent to US$ 1.00.

How much did Pedro pay, in reais, for his online shopping?

Erick and his family drove to the beach. They left on a Friday and returned on Sunday. The daily cost of the trip, including food and accomodation, was US$ 400.00. Fuel for the trip, including round trip, cost US$ 220.00.

What is the total cost of the trip for Erick and his family?

Gabriel and his sister’s dream is to buy a bike that’s on display in a store window.

Available at: https://www.shutterstock.com/pt/image-vector/modern-city-mountain-bike-vbrakes-multispeed-1198701361. Accessed 8 Nov. 2022

Gabriel has US$ 352.00 and his sister has US$ 284.00. They decided to pool their money to try to buy the bike.

Do Gabriel and his sister manage to buy the bike together?

Isabela needed to draw a shape for a school paper, but she should follow the directions her teacher gave:

“You must draw a shape with three sides and three vertices.”

Isabela has to draw a

It is common, in large factories and industries, to use barrels that have a circle as a lower and upper base and a defined height. Look at the image of one of these barrels below:

Available at: https://www.shutterstock.com/pt/image-illustration/beer-keg-isolated-on-white-229245679. Accessed 8 Nov. 2022.

The barrel in the image above has the geometric shape of:

ONE CHICKEN LAID $27$ EGGS IN ONE MONTH. $9$ FROM THESE EGGS BROKE.

HOW MANY EGGS WERE LEFT?