Of all the children living in Country M in 1989, 24 percent had access to a computer at home and 18 percent used a computer at home. What percent of children who had access to a computer at home did not use a computer at home?

A consumer survey was conducted to examine patterns in ownership of tablet computers, cellular telephones, and Blu-ray players. The following data were obtained: 315 people had tablet computers, 236 had cell phones, 269 had Blu-ray players, 69 had all three, 64 had none, 94 had cell phones and Blu-ray players, 57 had cell phones but no computers or Blu-ray players, and 108 had computers and Blu-ray players but no cell phones. (Round your answers to one decimal place.)(a) What percent of the people surveyed owned a cell phone? %(b) What percent of the people surveyed owned only a cell phone?

In a class, 15% of total number of students failed in Science, 5% of total number of students failed in Maths and 10% of total number of students failed in both.How much percentage of students passed in both Maths and Science?70%80%60%90%

80% of the people who signed up for a competition were adults. 70% of the children who signed up for the competition were boys. 60 more boys than girls signed up for the competition. After some more boys signed up for the competition, 25% of the people who signed up for the competition were boys. How many more boys signed up for the competition?

When 10% of the population of the school were absent, there were 810 present. How many pupils were on the roll?(1 Point)

80% of the workers at a factory are male. 45% of the male workers and 30% of the female workers have been trained to use a new machine. What percentage of the workers have not been trained?