If Mary and Tom put their money together they have £36. If Mary's money were halved and Tom's money doubled they would have £42. How much does each of them have? If you're answering, could you please show working out, thanks so much.

Mary: £20

Tom: £16

Step-by-step explanation:

Let x=the number of £ Mary has and y=number of £ Tom has.

x+y=36  ==>x=36-y

x/2+2y=42 ==> x+4y=84

36-y+4y=84

36+3y=84

3y=48

y=16

x+y=36, so x+16=36, so x=20

i would be 2,000 just get the square root of 50 which is 2500 and the divid 4/5 and last thing multiply the answer you get for that by the square root of 50

step-by-step explanation:

look in attachments

step-by-step explanation:

a = (-2, 0)

b= (-4, 0)

c = (-5,2)

d = (-1,2)