Five years ago, the average age of a family of four members was 25 years. Six years hence, the ratio of their ages will be 9:7:5:3. Find the approximate present ages of each family member.
Let the ages of the four family members be A, B, C, and D, respectively. Five years ago, the average age of a family of four members was 25 years: The total age of the family five years ago = 4 × 25 = 100 The sum of their ages five years ago = A + B + C + D = 100 The total present age of the family = (A + 5) + (B + 5) + (C + 5) + (D + 5) = 100+20 =120 Six years hence, The total age of the family =(A+5+6) + (B+5+6) + (C+5+6) + (D+5+6) = 120+24 =144 Six years hence, the ratio of their ages will be 9:7:5:3 (9x) + (7x) + (5x) + (3x) = 144 x = 144 / 24 x = 6 A = 9x – 6 = (9 × 6) - 6 = 54 – 6 = 48 years B = 7x – 6 = (7× 6) – 6 = 42- 6 = 36 years C = 5x – 6 = (5 × 6) - 6 = 30 – 6 = 24 years D = 3x – 6 = (3 × 6) - 6 = 18 – 6 = 12 years
Who clinched the men's singles title at the Canada Open Badminton 2023 from India?
Recently AAI has approved the allotment of land measuring to TASL for setting up Final Assembly Line and MRO facility at which Airport?
On November 30, _____ became the world's newest republic.
National Institute of Fisheries Post Harvest Technology and Training (NIFPHATT), has organized a workshop on Matsya Sampada Jagrukta Abhiyan to promote ...
When will the second phase of vaccination begin in India?
Which of the following Articles of the Constitution of India adopted Hindi in Devanagari script as the official language of the Union?
Recently an Online platform ‘Trade nxt ’ which enables corporate, and MSMEs to transact all cross-border export-import transactions, has bee...
India’s Harnaaz Sandhu has been crowned Miss Universe 2021. Punjab-based Harnaaz Sandhu represented India at the _____ Miss Universe 2021, held in...
What issue did Vice-President Shri Jagdeep Dhankhar recently (April 29 2024) underline the need for reforming?
What is the primary goal of the PREFIRE mission launched by NASA?