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Laila was 1/4 as young as Kiran five years ago.If the sum or their ages is 110 ,how old is laila?

How many kgs of concrete containing 14% cement must be mixed with 150kgs of concrete with 6% to create a mixture that is 11% cement?

6kgs of a dried fruit mixture which coat 300per kg and 1.5kgs of nuts costing $700 per kg are mixed together. What is the cost per kg of this mixture?

In a school 1/6th of the girls and 1/7th of the boys took part in a camp.what fraction of the total number of students took part in the camp?

One third of the boys and one half of the girls participate in a social work. If the number of participating students is 300 out of which 100 are boys,what is the total number of students?

Thank you so much i got the right answer

Ithink question is wrong

Thanks for help and I post the exact question