**400 people took part in a camp. 73 of them were adults and the rest were children. 2/5 of the boys and ¼ of the girls were lower primary pupils while the rest of them were upper primary pupils. There were 9 more upper primary girls than upper primary boys.a) How many upper primary pupils were there?b) What percentage of the people who took part in the camp were girls?Solution**

400 people – 73 adults ----- 327 children

12 parts + 15 parts ----- 981 + 45

27 parts ----- 1026

1 part ----- 1026 divided by 27 = 38

**a)**

(Upp Pri Girls) 3 parts ---- 3 x 38 = 114

(Upp Pri Boys) 114 – 9 = 105

Total Upper Pri ----- 114 + 105 = 219

**Answer: There were 219 upper primary pupils.**

**b)**

(Total Girls) 4 parts ----- 38 x 4 = 152

Percentage of girls ----- (152/400) x 100% = 38%

**Answer: 38% were girls.**

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