FRAÇÃO: Heitor gastou 1/4 do salário três vezes — você sabe quanto sobrou? | Concursos 2025

Heitor spent 1/4 of his salary three times in a row — how much did he have left in his pocket? I solve this and 3 other real VUNESP and FGV questions that are tripping up candidates in 2025. Heitor received his salary… but ended up falling into a real mathematical trap! 😵 In this video, we'll solve percentage problems that are tripping up many candidates in public service exams. You'll learn successive percentages, profit, discount, mathematical interpretation, and logical reasoning in a visual and practical way — WITHOUT memorizing formulas. In addition to Heitor's problem, we also solve real VUNESP and FGV questions that confuse many people during the exam. 📚 If you're stuck on: ✔️ Successive percentages ✔️ Chained profit and discount ✔️ VUNESP and FGV exam questions ✔️ Basic math for competitive exams ✔️ Logical-mathematical reasoning this video will unlock your mind. 🎯 Want to learn math from ZERO to competitive exam level? 🚀 Check out my complete 80+ Approval course: 👉 https://mathematicamente.com.br/matem... 📌 Link also in the first pinned comment ⏱️ Lesson Schedule 00:00 Introduction 00:26 Heitor's Salary — Successive Percentages 05:02 Brick Question — VUNESP 2025 09:07 Radio Survey — FGV 2026 14:01 Final Car Challenge — FGV 2026 QUESTION 1 — HEITOR'S SALARY Heitor received his salary and went shopping. First, he spent 1/4 of what he had. Then he spent 1/4 of what remained. Next, he spent another 1/4 of what was left. What percentage of his salary does Heitor still have in his pocket? A) Between 35% and 40% of the initial salary B) Between 40% and 45% of the initial salary C) Between 45% and 50% of the initial salary D) Between 50% and 55% of the initial salary E) Between 55% and 60% of the initial salary QUESTION 2 — BRICKS ON THE SIDEWALK Year: 2025 | Exam Board: VUNESP To build a sidewalk, 400 cement bricks were purchased. The work took 2 days. On the first day, 30% of the total number of bricks purchased were used. On the second day, 70% of the remaining bricks were used. The number of bricks left over was equal to: A) 138 B) 123 C) 105 D) 92 E) 84 QUESTION 3 — RADIO SURVEY Year: 2026 | Exam Board: FGV A radio station conducted a survey to better understand its listening audience. In total, 240 people were interviewed. Of the total interviewed, 100 were women and 136 listen to the radio. It was also found that only 6 women do not listen to the radio. Of the men interviewed, the percentage of those who listen to the radio is: A) 10% B) 20% C) 25% D) 30% E) 35% QUESTION 4 — FINAL CHALLENGE FGV Year: 2026 | Exam Board: FGV Samuel buys and sells used cars in his store. In one of his transactions, he bought a used car and advertised a selling price 20% higher than what he spent on the purchase. However, when selling, he gave the buyer a 10% discount on the advertised selling price. With this, he made a profit of R$ 5,200.00 in this transaction. This car was sold for: A) R$ 65,000.00 B) R$ 68,600.00 C) R$ 70,200.00 D) R$ 74,800.00 E) R$ 78,000.00 STEP-BY-STEP SOLUTION — FINAL CHALLENGE Let x be the amount spent on buying the car. The advertised price was: 1.2x In the sale, Samuel gave a 10% discount: 1.2x × 0.9 = 1.08x The profit was: 1.08x − x = 0.08x Since the profit was R$ 5,200: 0.08x = 5,200 → x = 65,000 The sale price was: 1.08 × 65,000 = R$ 70,200.00 ✅ ANSWER: ALTERNATIVE C 👍 Like if this video helped you 🔔 Subscribe so you don't miss Heitor's next challenges 💬 Comment HEITOR 80+ if you made it to the end #mathematics #percentage #successivepercentage #logicalreasoning #vunesp #fgv #publicexams #mathematicsforcompetitions2025 #mathematicalchallenge #professorrobson #heitor #basicmathematics #competitions2025 #profitdiscount