mrs perry shares out 15 biscuits between gemma and zak the ratio 1:2 how many biscuits does each child get

Question

anonymous · Answer

help

campbell_st · Answer

this is the unitary method

start by adding the parts is the ratio 

1 + 2 = ?

campbell_st · Answer

when you get an answer to the number of parts... 

take the total of 15 and divide it by your answer... 

this will be the value of 1 part of the ratio. 

then Gemma gets 1 x value of 1 part

       Zac gets 2 x the value of 1 part

hope it makes sense

anonymous · Answer

lets say the value is x; the ratio 1:2 gets divided as x,2x. Now if you add both x and 2x the sum is equal to 15. then you have x. By substituting, you get the shares. Hope you understand

shamim · Answer

3x=15
X=?