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Workers × Days ∝ Houses 5 × 4 = 20 worker‑days for 3 houses → 20/3 worker‑days per house. For 6 houses: 20/3 × 6 = 40 worker‑days. With 10 workers: 40/10 = 4 days . Exercise 3 (Percentage) A shirt costs €60 after a 25% discount. What was the original price?

Multiply by 3 each time. 81 × 3 = 243 Exercise 2 (Fractions & proportions) If 5 workers paint 3 houses in 4 days, how many days will 10 workers need to paint 6 houses? Test Psicotecnicos Pdf Resueltos

Differences: +2, +3, +4, next +5 → J (10th) +5 = O (15th). O . Exercise 17 (Deductive logic) All cats are mammals. Some mammals are dogs. Therefore: a) All cats are dogs b) Some cats are dogs c) No conclusion Workers × Days ∝ Houses 5 × 4

Cannot conclude about cats and dogs → c) No conclusion Exercise 18 (Number analogy) 8 : 64 :: 12 : ? Solution: 8² = 64 → 12² = 144 Exercise 19 (Calendar) If today is Monday, what day is the day after 100 days from today? Exercise 3 (Percentage) A shirt costs €60 after