At South London College, 40% of the students are boys (the rest are girls). 60% of the boys and 70% of the girls own a games console. If 27 girls do not own a games console, how many pupils in total do own a games console?

Consider the diagram. which line segment has the same measure as st? rx tx sr xs

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

If rs 900 amounts to rs 1044 in 4 years, what sum will amount to 1368 in 3 1/2 years at the same rate