The cost of three plums when 10 plums can be bought for 80p, you find the cost of one plum by dividing 80p by 10, then multiplying that by three, resulting in a total cost of 24 pence for three plums.
The question asks us to calculate the cost of three plums if 10 plums can be bought for 80 pence (p). To find the cost of one plum, we divide the total cost for 10 plums by the number of plums. So, the cost of one plum is 80p ÷ 10 = 8p. Now, to find the cost of three plums, we multiply the cost of one plum by three. The cost for three plums is 8p × 3 = 24 pence. Therefore, three plums will cost 24 pence.