I need help with my maths because i fine it really hard!1) 70 people are divided into groups of to 21 people receive the real drug and the rest receive a placebo what is the ration of the people takin

I need help with my maths because i fine it really hard!

1) 70 people are divided into groups of to 21 people receive the real drug and the rest receive a placebo what is the ration of the people taking the real drug to those receiving the placebo.

2) a car factory produces red and blue cars in the ration 3:5 if it produces 150 red cars each week how many blue cars does it make

3)a farmer produces apples and pears in the ratio 7:6. if she harvests 42 tonnes of apples how many tonnes of pears does she produces

4) turquoise paint is made from blue white and green in the ration 2:4:1 if you have 4 litres of blue paint and can buy as much green and white as you need how many litres of turquoise paint can you make in total

5) a man knits baby clothes for his local baby care unit. he makes tops and hats in the ration 3:2 if he makes 10 more tops than hats how many hats does he make

6) a gardener plants roses in the ratio 5 yellow to every 3 red. he plants 20 more yellow than red roses bushes how many red rose bushes  does he plant

7) a stable teaches adults and children to ride. the ratio of adults to children is 2:7 if there are 25 more children then adults how many people does the stable have