Ratio & Proportion

Q1: The ratio of the present ages of Anju and Sandhya is 13: 17. Four years ago the ratio of their ages was 11: 15. What will be the ratio of their ages six years hence? 

Q2: The respective ratio between the ages of Samir, Joy and Pradeep is 16: 14: 13. The sum of their ages is 86. What will be the respective ratio between their ages 4 years hence? 

Q3: A certain amount was to be distributed among A, Band C in the ratio 2: 3: 4 respectively, but was erroneously distributed in the ratio 7: 2: 5 respectively. As a result of this, B got f 40 less. What is the amount? 

Q4: Rs.73,689/- are divided between A and B in the ratio 4: 7. What is the difference between thrice the share of A and twice the share of B? 

Q5: In a group of boys and girls, if 15 girls left the group, the ratio of boys is to girls becomes 2:1. After some time 45 boys also left the group, then the ratio of boys to girls is 1:5. What is the number of girls in the beginning?

Q6: Out of 120 applications for a post, 70 are male and 80 have a driverslicense.Wiˆstheratiobetweentheminiμm→maxiμmνmberofma≤shav∈gdriver${\displaystyle slicense.W\hat{i}stheratiobetweenthemini\mu m\to maxi\mu m\nu mberofma\le shav\in gdriver}$s license?

Q7: There are four persons A, B, C, D, and A has some coins. A gave half of the coins to Band 4 more besides. B gave half of the coins to C and 4 more besides. C gave half of the coins to D and 4 more besides. Both B and D end up with same number of coins. How many coins did A have originally? 

Q8: The diameters of two circular coins are in the ratio of 1: 3. The smaller coin is made to roll around the bigger coin till it returns to the position from where the process of rolling started. How many times the smaller coin rolled around the bigger coin? 

Q9: In a group of four friends, Ram and shyam have equal weight .The ratio of weight of shyam and Pooja is 2: 3 and the ratio of weights of Ram and Neenu is 1: 2. If the average weight is 55 kgs. How many of them have weight equal to or greater than 60 kgs.

Q10: In a class of 120 students, the number of boys and girls going for a trip is in the ratio 3:2 respectively. The number of girls not going for trip is 10 more than the number of boys not going for trip. If the number of boys going for trip is 30.then how many girls are there in the class?