Ratio & Proportion Questions and Answers
Practice ModeShowing 10 of 93 questions
Q81
The marks obtained by Praveen and Vijay are in the ratio of 4 : 5 and those obtained by Vijay and Suresh are in the ratio of 3 : 2. the marks obtained by Praveen and Suresh are in the ratio of :
Answer: Option C
Q82
Anshul got twice as many marks is English as in Science. His total marks in English, Science and Maths are 180. If the proportion of his marks in English and math is 2 : 3, what are his marks in Science ?
Answer: Option B
Q83
Two numbers are in the ratio 3 : 4 and the product of their L.C.M. and H.C.F. is 10800. the sum o the number is :
Answer: Option B
Q84
The age of X and Y are in the ratio of 3 : 1. Fifteen years hence, the ratio will be 2 : 1. Their present ages ( in years) are :
Answer: Option B
Q85
The ratio of the number of boys and girls in a school is 3 : 2. if 20% of the boys and 25% of the girls are schoolarhip holders, the percentage of the school students who are not scholarship holders, is :
Answer: Option C
Q86
Gold is 19 times as heavy a water copper is 9 times as heavy as water. In what ratio should these be mixed to get an alloy 15 times as heavy as water ?
Answer: Option D
Q87
85 kg of a mixture contains milk and water in the ratio 27 : 7. How much more water is to be added to get a new mixture containing milk and water in the ratio 3 : 1 ?
Answer: Option A
Q88
15 litres of mixture contains 20% alcohol and the rest water. If 3 litres of water be mixed in it, the percentage of alcohol in the new mixture will be :
Answer: Option B
Q89
20 litres of a mixture contains milk and water in the ratio 5 : 3 . if 4 litres of this mixture are replaced by 4 litres of milk, the ratio of milk to water in the new mixture will become :
Answer: Option B
Q90
A and B are two alloys o gold and copper prepared by mixing metals in the ratio 7 : 2 and 7 : 11 respectively. If equal quantities of the alloys are melted to form a third alloy C, the ratio of gold and copper in C will be :
Answer: Option C