This question was asked in Ex 7.3, 5
ᴀ ᴩɪᴇᴄᴇ ᴏꜰ ᴡɪʀᴇ 7/8 ᴍ ʟᴏɴɢ ʙʀᴏᴋᴇ ɪɴᴛᴏ ᴛᴡᴏ ᴩɪᴇᴄᴇꜱ ᴏɴᴇ ᴩɪᴇᴄᴇ ᴡᴀꜱ 2 ʙy 5 ᴍ ʟᴏɴɢ ʜᴏᴡ ʟᴏɴɢ ɪꜱ ᴛʜᴇ ᴏᴛʜᴇʀ ᴩɪᴇᴄᴇ 
eunice's image