Multiple choice

The ratio of two liquids in four mixtures is 1 : 2, 2 : 3, 3 : 4 and 4 : 5 respectively. If their equal quantities be mixed up then what will be the ratio of two liquids in new mixture. चार मिश्रणों में दो द्रवों का अनुपात क्रमशः 1 : 2, 2 : 3, 3 : 4 और 4 : 5 है। यदि इनकी समान मात्राओं को मिलाया जाये तो नये मिश्रण में दोनों द्रवों का अनुपात क्या होगा ?

  1. 377 : 253

  2. 253 : 375

  3. 153 : 393

  4. 253 : 377

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Taking equal quantities of each mixture, the liquid ratios are: 1:2 gives liquid1:liquid2 as 1/3:2/3, 2:3 gives 2/5:3/5, 3:4 gives 3/7:4/7, 4:5 gives 4/9:5/9. Adding liquid1 fractions: 1/3 + 2/5 + 3/7 + 4/9 = 253/315. Adding liquid2 fractions: 2/3 + 3/5 + 4/7 + 5/9 = 377/315. The ratio is 253:377.