human
Solve length problems involving similar shapes where the missing length is the shorter one These two shapes are similar.

What is the value of \( y \) ? ![The diagram is of two trapeziums. The base of each trapezium is parallel with its top side.
The smaller trapezium has base 60cm and top labelled y.
The larger trapezium has base 150cm and top 70cm.]() \( 20 \mathrm{~cm} \)
gpt
Estimated when not appropriate