Post-UTME Mathematics 2018 Objective — Question 4
Question 4 of 20 from the Post-UTME Screening (Post-UTME) Mathematics 2018 Objective paper, with the correct answer and a full explanation.
Advertisement
In a family, the ages of children arranged from the youngest to the oldest are 2, 6, y, 14 and z. If the sequence of ages is in an arithmetic progression, what is the ratio z:y?
- A. 9:4
- B. 4:9
- C. 9:5Correct
- D. 5:9
Explanation
Common difference d=6-2=4, giving y=10, and continuing z=18. Ratio z:y = 18:10 = 9:5.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.