A science teacher wants to prepare a resource pack for each of the 120 pupils in year 10. She will need to photocopy 40 pages per pupil and give each pupil a folder to keep the pages in. Photocopying costs 2p per page and folders are 70p each. There is a similar resource available online for a one off cost of £175. How much would she save by choosing the online option?

She would save £5

Step-by-step explanation:

→ First work out the cost of items for one student. Work out cost of the photocopying

40 × £0.02 = £0.80

→ Add the cost of the one folder

£0.80 + £0.70 = £1.50

⇒ Now we know £1.50 is the amount of money it costs for one student, we multiply that by 120 because there are 120 pupils

£1.50 × 120 = £180

→ £180 is the total cost and now we minus that from the online price of £175

£180 - £175 = £5

homozygous. one is homozygous, while two is heterozygous.

41*67/2=1373.5

step-by-step explanation:

i just used a calculator