Question
Neave had two planks of the same length. He sawed one plank into equal parts of length 40 cm. In each part he pasted 5 small stickers as shown in Figure 1. After that, he sawed the other plank into equal parts of length 1.8 m and in each part, he pasted 7 big stickers as shown in Figure 2. When he finished sticking, he counted that there were 62 more small stickers than big stickers. If all the stickers are spaced equally, find the length of the two planks before they were cut? Give your answer in cm.
4 m

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Neave had two planks of the same length. He sawed one plank into equal parts of length 40 cm. In each part he pasted 5 small stickers as shown in Figure 1. After that, he sawed the other plank into equal parts of length 1.8 m and in each part, he pasted 7 big stickers as shown in Figure 2. When he finished sticking, he counted that there were 62 more small stickers than big stickers. If all the stickers are spaced equally, find the length of the two planks before they were cut? Give your answer in cm.