Question
( d ) Toffees cost t cents each and pieces of fudge cost f cents each.
Tjaa buys 8 toffees and 3 pieces of fudge.
( i ) Write down the total cost, in cents, in terms of t and f.
( 2 )
( ii ) Write down the total cost in Namibia dollars.
( 2 )
( iii ) Find the total cost, in N$, when t = 50 and f = 75.
( 2 )
( e ) Find the values of x if (x + 4)(x - 5) = 0.
Answers
GPT 3.5
(i) Total cost = 8t + 3f cents
(ii) To convert the total cost to Namibia dollars, we need to divide by 100 since 100 cents = 1 N$. So, the total cost in Namibia dollars is:
(8t + 3f) / 100 N$
(iii) Substituting t = 50 and f = 75 into the total cost formula:
Total cost = 8(50) + 3(75)
Total cost = 400 + 225
Total cost = 625 cents
To convert to Namibia dollars:
625 / 100 = 6.25 N$
(e) To find the values of x from the equation (x + 4)(x - 5) = 0, we set each factor to 0:
x + 4 = 0
x = -4
and
x - 5 = 0
x = 5
So, the values of x are -4 and 5.
(ii) To convert the total cost to Namibia dollars, we need to divide by 100 since 100 cents = 1 N$. So, the total cost in Namibia dollars is:
(8t + 3f) / 100 N$
(iii) Substituting t = 50 and f = 75 into the total cost formula:
Total cost = 8(50) + 3(75)
Total cost = 400 + 225
Total cost = 625 cents
To convert to Namibia dollars:
625 / 100 = 6.25 N$
(e) To find the values of x from the equation (x + 4)(x - 5) = 0, we set each factor to 0:
x + 4 = 0
x = -4
and
x - 5 = 0
x = 5
So, the values of x are -4 and 5.