The cost of 4 kg of kale and 1.5 kg of beetroot is £12.20. The cost of 5 kg of kale and 2 kg of beetroot is £15.40.
Work out the cost of
a) 1 kg of kale.
b) 1 kg of beetroot.

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?