Question

GCSE MATHS PLEASE ANSWER!!!!!!!!!!!!!!!!
Shirley wants to find an estimate for the number of bees in her hive.
On Monday she catches 90 of the bees.
She puts a mark on each bee and returns them to her hive.
On Tuesday she catches 120 of the bees.
She finds that 20 of these bees have been marked.
(a) Work out an estimate for the total number of bees in her hive.



Shirley assumes that none of the marks had rubbed off between Monday and Tuesday.
(b) If Shirley’s assumption is wrong, explain what effect this would have on your answer
to part (a).

Answer 1

Answer:

thx for 15 fre points

Step-by-step explanation:

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Answer 2

Answer:

(A) is 540

Step-by-step explanation:

90/x=20=120

x=540

I don't know if this is right for part b but: There would be a lower total number of bees as the number of bee's that have been marked had rubbed of.