15 girls can complete a rangoli in 12 days, and 10 boys can complete the same work in 15 days. To complete the work earlier 10 boys and 15 girls are employed, in how many days will this work get completed?
Pick: A) 6 B) 7 C) 6.5 D) 6 2/3 E) 6 1/4
Work done by 15 girls per day =1/12   Work done by 10 boys per day = 1/15   Work done by 15 girls and 10 boys per day=1/12+1/15=3/20=6 2/3   10 boys and 15 girls will complete the work in =6 2/3 days   6 2/3
<result>D</result>
15 girls can complete a rangoli in 12 days, and 10 boys can complete the same work in 15 days. To complete the work earlier 10 boys and 15 girls are employed, in how many days will this work get completed?