CTS Company Numerical Ability Averages

The average of the test scores of a class of 'x' students is 80 and that of 'y' student is 94. When the scores of both the classes are combined, the average becomes 86. What is the ratio of x to y?
1) 6 : 5
2) 5 : 4
3) 4 : 3
4) 7 : 6
5) 3 : 2

Read Solution (Total 1)

3) 4 : 3

(Total score of 'x' students + Total score of 'y' students)/ (x+y) =86
(80x + 94y)/(x+y)=86
6x=8y
x/y=4/3
8 years agoHelpfull: Yes(5) No(0)

CTS Other Question

At present Manorama is six times older than her son's age. Seven years hence, the ratio of their ages will be 11:3. What is Manorama's present age?
1) 42 years
2) 54 years
3) 63 years
4) 36 years
5) 48 years

The ages of Anshu, Bharti and Charita together are 57 years. Bharti is thrice as old as Anshu and Charita is 12 years older than Anshu. Then, the respective age of Anshu, Bharti and Charita is:
1) 8, 26, 23 (years)
2) 9, 27, 21 (years)
3) 8, 25, 24 (years)
4) 9, 26, 22 (years)
5) 9, 28, 20 (years)