Question:
Yanti decorated the sides of a rectangular board with 16 buttons. The buttons were placed at an equal distance apart along all the sides of the board. The length of the board was 210 cm. The figure below shows part of her layout.
a) What was the breadth of the rectangular board?
b) After that, Yanti decided to use a combination of ribbons and buttons. She spent 1/4 of her money of 16 buttons and 4 ribbons. The cost of each ribbon is twice the cost of each button. Yanti bought some more ribbons with 1/2 of her remaining money. How many ribbons did she buy altogether in the end?
Solution:
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