The average number of questions Seth and Min solved was 210. The average number of questions Min and Kylie solved was 190. The average number of questions Kylie and Seth solved was 183. How many questions did each of them solve?
- Min
- Seth
- Kylie
(a)
Number of questions that Seth and Min solved
= 210 x 2
= 420
Number of questions that Min and Kylie solved
= 190 x 2
= 380
Number of questions that Kylie and Seth solved
= 183 x 2
= 366
Number of questions that Min solved
= (420 + 380 - 366) ÷ 2
= 434 ÷ 2
= 217
(b)
Number of questions that Seth solved
= 420 - 217
= 203
(c)
Number of questions that Kylie solved
= 380 - 217
= 163
Answer(s): (a) 217; (b) 203; (c) 163
