1.Which statements is true?
(1 Point)
A ratio compares two or more quantities that are measured in the same unit.
A ratio compares two or more quantities that are measured in the different unit.
A ratio compares more than 3 quantities that are measured in the same unit.
A ratio compares two or more quantities that have the same value.
2.What does this means when we say “ The ratio of the amount of sugar to the amount of salt is 2 : 3”
(1 Point)
Every 2 parts of salt must be mixed with 3 parts of sugar
Every 2 parts of sugar must be mixed with 3 parts of salt
Every 3 parts of salt must be mixed with 3 parts of sugar
Every 2 parts of sugar must be mixed with 2 parts of sugar
3.The scale on a map is 1:400 000. A distance of 1 cm on the map represents a distance on the ground of
(1 Point)
400000 km
4000 km
40 km
4 km
4.A bag contains red, green and yellow jelly snakes in the ratio 7:3:2. If there are 24 jelly snakes in the bag, how many of yellow snakes are there?
(1 Point)
14
6
4
24
5.There are 450 students at a sports event. The ratio of girls to boys at the event is 8 to 7. How many girls are at the event?
(1 Point)
240
30
210
250
6.Nancy, Evan and Jay put money into a business in the ratio 2:3:4. They share the profits in the same ratio. If the profit is $54 000, how much will Jay receive?
(1 Point)
$6 000
$13 500
$24 000
$49 000
7.A circle is divided into four sectors, with the sector angles in the ratio 1:2:3:4. What are the sizes of the smallest sector angles?
(1 Point)
144
108
72
36
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Sinh Học lớp 12
