1. How high is it?
Solution: Let Mingming's height be x cm.
x+(3x- 10)=222
4x=232
x=58
Answer: Mingming is 58cm tall.
2. What other questions can you ask? (at least two)
How tall is dad? How tall is mom?
58x3= 174 (cm) 58x3-10 =174-10 =164 (cm)
A: Dad's height 174cm. A: Mom's height 164cm.