70 Black - boards and 40 chairs were purchased for a school. If each black - board costs ₹ 450 and each chair costs ₹ 225. Find total amount. how is yarn made from ?
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Step-by-step explanation:
cost of 1 black boards = Rs. 450
cost of 70 black boards = Rs. (450 x 70) = Rs. 31500
cost of 1 chair = Rs. 225
cost of 40 chairs = Rs. (225 x 40) = Rs. 9000
Total cost = Rs. (31500 +9000) = Rs. 40500...
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