The average number of questions Ken and Abi solved was 218. The average number of questions Abi and Min solved was 193. The average number of questions Min and Ken solved was 182. How many questions did each of them solve?
- Abi
- Ken
- Min
(a)
Number of questions that Ken and Abi solved
= 218 x 2
= 436
Number of questions that Abi and Min solved
= 193 x 2
= 386
Number of questions that Min and Ken solved
= 182 x 2
= 364
Number of questions that Abi solved
= (436 + 386 - 364) ÷ 2
= 458 ÷ 2
= 229
(b)
Number of questions that Ken solved
= 436 - 229
= 207
(c)
Number of questions that Min solved
= 386 - 229
= 157
Answer(s): (a) 229; (b) 207; (c) 157
