3/5 of a number is 162. Work out the number.
270
AP
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All answers ▸Solve the simultaneous equations: 1) 3x+5y=14 and 2) -3y+10=x
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There are only red , blue and purple counters in a bag. The ratio of the number of red counters to the number of blue counters is 3 : 17. If a counter is taken randomly the probability that it is purple is 0.2 Work out the probability for it to be red.
Solve the simultaneous equations to find x and y: 3x + 5y = 10 , 5x + 4y = 8