Level 3
Roger had some rope with a total length of 24 m. He used 23 of the rope to tie a wooden structure for outdoor cooking and 34 of the remaining rope to strengthen the pegs for his tent. How much rope did he have left? Give your answer in meters.
Level 3 35 of the number of boys in the school is equal to 34 of the number of girls in the school. There are 600 girls. What is the total enrolment of the school?