Maths Homework help - 10 points =]?

1. Share £50 in the ratio 2:3





2. a map has a scale of 5cm to 20km,


a. rewrite the scale as a ratio in its simplest form.


b. how long is a beach that measures 1.2cm on the map?


c. how long should a 12km road be on the map?





3. In a school the ratio of boys to girls is 5:4, if there are 450 boys, how many girls are there?





4.Paint is mixed 7 parts red to 4 parts blue. I have 56 litres of red paint. How much blue paint do i need to get the correct mix?





5. The ratio of the lengths of two parallelograms is 4:3. The length of the smaller parallelogram is 7.5cm. How long is the longer parallelogram?





6. Concrete is made by mixing sand and cement in the ratio 3:2. How much cement do i need to make the concrete if i use 27 buckets of sand?





7. A recipe says that 2.4kg of meat is needed to feed six people. How much meat is needed to feed 10 people?





8. A childs pencil case has pencils, pens and crayons in the ratio 4:5:2. The child has 16 pencils. How many pens does she have?

Maths Homework help - 10 points =]?
2/3 = 0.666 ; 0.666*50 = 33.33 ; 50-33.33 = 16.67


5 cm to 20 km = 5/5 cm to 20/5 km


1.2 cm * 4km/cm = 4.8 km


12 km * 1 cm/4 km = 3 cm


5/4 = 540/X ; 5X = 2160 ; X = 432


7 red / 4 blue = 56 red / X blue ; 7X = 224 ; X = 32


4 / 3 = X / 7.5 ; X = (4/3)*7.5 = 10


3 / 2 = 27 / X ; 3X = 54 ; X = 18


2.4 / 6 = X / 10 ; X = 10*(2.4 / 6) = 4


4 / 5 = 16 / X ; 4X = 5*16 ; X = 20
Reply:3


5x+4x=450


9x=450


x=50


gals=4*50=200
Reply:do ur own homework i dont have enough time to do tis but i could easly

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