There are 9 counters in a bag. 7 of the counters are green. 2 of the counters are blue. ria takes a random two counters from the bag. work out the probability that ria takes one counter of each colour. you must show your working.

Ineed with number 17 i don’t get it at alll

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?