Maths Non-calc questions Flashcards
(3 cards)
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
