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Ratio: Quiz 10
Ratio: Quiz 10
Part 1
1) The ratio of boys to girls at a scout group is 5 : 4
6 more boys join the group and the ratio of boys to girls becomes 3 : 2
a) How many girls are in the scout group?
b) How many boys were in the scout group before the 6 boys joined?
c) How many boys are in the scout group after the 6 boys joined?
2) David has a bag that contains blue and green balls. The ratio of blue balls to green balls is 2 : 1
David adds 8 green balls to the bag and the ratio of blue balls to green balls becomes 4 : 3
a) How many blue balls are in the bag?
b) How many green balls were in the bag before the 8 green balls were added?
c) How many green balls are in the bag after the 8 green balls were added?
3) A chocolate box contains white and milk chocolates. The ratio of white chocolates to milk chocolates is 4 : 3
I then eat 6 white chocolates and the ratio of white chocolates to milk chocolates becomes 10 : 9.
Before I ate any chocolates, how many chocolates were in the box.
1) The ratio of boys to girls at a scout group is 5 : 4
6 more boys join the group and the ratio of boys to girls becomes 3 : 2
a) How many girls are in the scout group?
b) How many boys were in the scout group before the 6 boys joined?
c) How many boys are in the scout group after the 6 boys joined?
2) David has a bag that contains blue and green balls. The ratio of blue balls to green balls is 2 : 1
David adds 8 green balls to the bag and the ratio of blue balls to green balls becomes 4 : 3
a) How many blue balls are in the bag?
b) How many green balls were in the bag before the 8 green balls were added?
c) How many green balls are in the bag after the 8 green balls were added?
3) A chocolate box contains white and milk chocolates. The ratio of white chocolates to milk chocolates is 4 : 3
I then eat 6 white chocolates and the ratio of white chocolates to milk chocolates becomes 10 : 9.
Before I ate any chocolates, how many chocolates were in the box.
Part 2
1) a and b are two numbers such that a > b
When you add 5 to a and add 5 to b, the answers are in the ratio 2 : 1
When you subtract 10 from a and subtract 10 from b, the answers are in the ratio 5 : 1
Find the ratio a : b
Give your answer in its simplest form.
2) c and d are two numbers such that c > d
When you subtract 20 from c and subtract 20 from d, the answers are in the ratio 3 : 1
When you add 20 to c and add 20 to d, the answers are in the ratio 5 : 3
Find the ratio c : d
Give your answer in its simplest form.
3) e and f are two numbers such that f > e
When you subtract 10 from e and subtract 10 from f, the answers are in the ratio 2 : 3
When you add 10 to e and add 10 to f, the answers are in the ratio 4 : 5
Find the ratio e : f
Give your answer in its simplest form.
1) a and b are two numbers such that a > b
When you add 5 to a and add 5 to b, the answers are in the ratio 2 : 1
When you subtract 10 from a and subtract 10 from b, the answers are in the ratio 5 : 1
Find the ratio a : b
Give your answer in its simplest form.
2) c and d are two numbers such that c > d
When you subtract 20 from c and subtract 20 from d, the answers are in the ratio 3 : 1
When you add 20 to c and add 20 to d, the answers are in the ratio 5 : 3
Find the ratio c : d
Give your answer in its simplest form.
3) e and f are two numbers such that f > e
When you subtract 10 from e and subtract 10 from f, the answers are in the ratio 2 : 3
When you add 10 to e and add 10 to f, the answers are in the ratio 4 : 5
Find the ratio e : f
Give your answer in its simplest form.