Bags of sugar come in 3 sizes: Small bag: A 250 g bag costs 60p. Medium bag: A 500 g bag costs £1.10. Large bag: A 3 kg bag costs £6.50. Calculate the cost of 3 kg for the small and medium bags. Give your answer in pounds to 2 dp.

small bag:

250g = £60

1 g = 60/250

= £0.24

3000g = 0.24 × 3000

= £720

medium bag:

500g = £1.10

1g = 1.10/500

= 2.2 × 10^-3

3000g = 2.2×10^-3 × 3000

= £6.6

total 3kg of small & medium bags

= £720 + £6.6

= £ 726.6

There are 50 teachers in total at the Plainville Middle school.

After hiring 8 new teachers, the Plainville Middle school will have a total of 58 teachers.

Step-by-step explanation:

It is given that,

To find the teachers who are already at the school :

Let us consider, the total old teachers at school be 'x'.

From the give information, 8 is the 16% of the total old teachers.

⇒

⇒

⇒

⇒

The total teachers in the school is 50 teachers.

To find the total teachers after hiring 8 new teachers :

⇒ 50 + 8 = 58 teachers.

Therefore,

After hiring 8 new teachers, the Plainville Middle school will have a total of 58 teachers.