Someone and try give me the working out for all of them or one of them if u give working out for the questions i will give a brainliest

1.

Answer :
3 : 2
= 3 x 120 : 2 x 120
= 360 : 240

2.

Answer :
Ratio = 30 : 70

3.
4 : 8 = 1 : 2
8 : 4 = 2 : 1

Answer : 4 more squares have to be shaded.

4. (a)

50 x 1.5 = 75g of butter
150 x 1.5 = 225ml of water
60 x 1.5 = 90g of flour
6 x 1.5 = 9 eggs
170 x 1.5 = 255g of chocolate

4. (b)

50 x 3.75 = 187.5g of butter
150 x 3.75 = 562.5ml of water
60 x 3.75 = 225g of flour
6 x 3.75 = 22.5 eggs
170 x 3.75 = 637.5g of chocolate

Hope this helps. - M