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Purple paint is made by mixing red paint and blue paint in the ratio 5 : 2 Yan has 30 litres of red paint and 9 litres of blue paint. What is the maximum amount of purple paint he can make?

the ratio given is 5:2simplify this ratio by diving 2 = 2.5 : 1 the maximum amount of blue paint is 9Lso multiply the whole ratio by 99 x 1 = 9.0L blue paint9 x 2.5 = 22.5L red paint add the two paints toget...
JL
Answered by Joseph L. • Maths tutor
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How do I know which past tense I am meant to use?

This is something that you will get the hang of the more you use the past tense in spoken and written French. But there are some basic rules that you can use to help you. The passé composé is used to describ...
OB
Answered by Olivia B. • French tutor
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How Should I revise for my GCSE / A Level English Exam?

Through focusing on the following:character notes on the texts studiedthematic notes on the texts studiedkey quotes we have discussed memorised to back up thematic pointsuseful literary techniques commonly u...
IL
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simplify fully: (x^2+x-6)/(x^2-7x+10)

First, the numerator and denominator of the fraction need to be factorised:(x+3)(x-2)/(x-5)(x-2)The 'like' terms should then be crossed out; in the case above, it is the (x-2) brackets.(x+3) (x-2) /(x-5) (x-...
LL
Answered by Lili L. • Maths tutor
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Explain how successive ionization energies account for the existence of three main energy levels in the sodium atom.

Make the student observe and analyse the electronic configuration of sodium and the trends in ionization energies for this element. We note a large increase in ionization energy between the 1st and 2nd elect...
YT
Answered by Yasmin T. • Chemistry tutor
10517 Views