A packet of sweets contains only blue and red sweets the ratio of blue to red sweets in a packet is 2:1 if there are 12 sweets in total how many red sweets are there

4 red swets

Step-by-step explanation:

2 + 1 = 3 (Total units of both red and blue sweets)

3 units = 12

1 unit = 12 ÷ 3 = 4

Since red sweets has only 1 unit, there are 4 red sweets out of 12 sweets.

10 glasses of juice could be made with 5 carrots, 1,500 orange juice, 2,000 papaya juice.

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."