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(There is a total of 1,000 students in the whole school) 1) A survey reveals that 20%of students speak Spanish. How many students speak Spanish ?
2) At one time or another ,6%of the students , have forgotten their locker combinations.how many have forgotten their locker combinations.
3) Of the grade 6 students surveyed,12% bring their lunch to school. Suppose 24 sixth graders do this. how many grade 6 students are at the school.
4) Arif and Keisha go to a restaurant for dinner. Their meal total $13.75 .the tax is 5%.how much tax is added to the bill and the tax combined .how much should they leave ? EXPLAIN


Sagot :

1.  20% means 20/100 or 2/10
so 2/10 of 1000=spanish=200=spanish


2.6%=6/100
6/100 times 1000=60


3. so 12%of 6th graders=24
divide by 6
2%of 6th graders=4
multiply by 50
100%of 6th graders=200
200 6th graders

4. so 5%=5/100=0.05
so tax=13.75 times 0.05=0.69
tax=69 cents
13.75+0.69=14.44