The ratio of the average ages of three people and the other two in a group of five people is 9 : 7. If the difference of their averages is 12, then find out the average age of all 5 people?
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PROTIK ROY
2Â years, 8Â months ago
Solution Math
chandu
2Â years, 3Â months ago
3*9x+2*7x=41x 9x-7x=2x=12=> x=6
41*6/5=49.2
Jasmin Jyotirekha Badi
2Â years, 5Â months ago
In the group of 5 people the ratio of average of the ages of first three and the last two is 9:7.if the average difference of their ages is 12 then what is the average age of the 5 people...? Please give me solution
DEVARAJ UMESH
2Â years, 5Â months ago
Explain