Maths Non-calc questions Flashcards
50 people each did an activity at GL1.
Some went swimming, some played squash, the rest went to the gym.
21 of the people were female.
6 of the 8 people who played squash were male.
18 people used the gym.
9 males went swimming.
Work out the number of females who used the gym.
6 out of 8 people who played squash were male.
Therefore 8 - 6 = 2 females played squash.
That leaves 21 - 2 = 19 females for gym & swimming.
Number of people who went swimming
50 - (8 + 18) = 24
Of these, 9 were male, so females who went swimming
24 - 9 = 15
19 females went to gym and swimming
therefore 19 - 15 = 4 females went to gym.
Mr Brown and his 2 children are going to London.
An adult ticket costs £24
A child ticket costs £12
Mr Brown has a family railcard.
It gives 1/3 off adult tickets.
60% off child tickets.
What will be the total cost of the tickets when Mr Brown uses his railcard?
Adult.
£24 x 1/3 = £8 discount.
Cost of adult ticket = £24 - £8 = £16
Child
£12 x .6 = £7.20
Cost of child ticket = £12 - £7.20 = £4.80
Total cost = £16 + (£4.80 x 2 ) = £25.60
How do you work out the sum of the interior angles of a polygon?
(n-2) x 180
