A cookie costs m cents and a slice of cake costs 70 cents more than a

cookie.

(a) What is the cost of 2 slices of cake and 4 cookies in cents?

(b) Alison wants to buy 3 slices of cake and 2 cookies but is short of

25 cents. If each cookies costs 80 cents, how much money does

Alison have?

Guest Oct 1, 2021

#1**+2 **

cookie = m cents

cake = cookie + 70 = m+70

a)

2 *cake + 4* cookie

= 2* (m+70) + 4*m

= 6m+140

b) m = 80 so cookie = 80 cents and cake = m+70 = 80 + 70 = 150 cents

3 * cake + 2*cookies

3* 150 + 2 * 80 = 610 cents

If Alison is 25 cents short she has 610 - 25 = 585 cents

ElectricPavlov Oct 1, 2021

#2**+1 **

Cookie =m

Cake= m+70 cents

4 cookies =4 m

2 cake = 2m+140 cents

Total= (6m + 140) cents

3 cake = 3m + 210

2 cookies = 2m

Total = 5m + 210

If m=80 cents,

Therefore total = 5x80 +210 =610.

Alison have 610 - 25 = 585 cents.

KINGVONOTF Oct 1, 2021