Q3. If a : b = 4 : 7, find 2a : 2b. // If a : b = 4 : 7 āĻšāϞā§, 2a : 2b āĻāĻŋāĻŽāĻžāύ ?
Multiplying both sides by same number doesnât change ratio. Ans: 4 : 7
Q4. If 5 workers can finish work in 12 days, 10 workers will take how many days ? ā§Ģ āĻāύ āϞā§āĻ ā§§ā§¨ āĻĻāĻŋāύāϤ āĻāĻžāĻŽāĻā§ āĻā§°ā§, ā§§ā§Ļ āĻāύ āϞāĻžāĻāĻŋāĻŦ āĻāĻŋāĻŽāĻžāύ āĻĻāĻŋāύ ?
Inverse proportion â 5 Ã 12 = 10 Ã x â x = 6, Ans: 6 days
Q5. A and B invest âš8000 and âš12000. Profit = âš90,000. Find each share. A āĻ ā§Žā§Ļā§Ļā§Ļ āĻā§°ā§ B āĻ ā§§ā§¨ā§Ļā§Ļā§Ļ āϞāĻāĻžāϞā§, āĻŽā§āĻ āϞāĻžāĻ ā§¯ā§Ļ,ā§Ļā§Ļā§ĻāĨ¤ āĻĻā§āϝāĻŧā§āĻāύ⧰ āϞāĻžāĻ āĻāĻŋāĻŽāĻžāύ ?
Q7:The ratio of two numbers is3 : 5. If their sum is 64, find the numbers. āĻĒā§ā§°āĻāĻĻā§āĻ āϏāĻāĻā§āϝāĻžā§° āĻ āύā§āĻĒāĻžāϤ 3 : 5āĨ¤ āĻŽā§āĻ āϝā§āĻāĻĢāϞ 64āĨ¤ āϏāĻāĻā§āϝāĻžāĻŦā§ā§° āĻāĻŋ ?
Soln:Total Parts = 3 + 5 = 8, 1 part value = 64 Ãˇ 8 = 8