in a kindergarten 3/5of the pupils are girls. on a day when 3/20of the girls were present, 153 girls were absent . how many boys are there in the school?

i belive those are the ones that are under 90 degreese.

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

what are you trying to solve here

step-by-step explanation: