Question

The cost of an A.C is Rs. 16500.12% VAT is chargeable.Find the amount chargeable.​

Answer 1

Answer:

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the inside measurements of a room are 22m long and 18 m broad .its walls are 1 m thick and there is a verandah outside and all round 21/2 m wide.find cost of paving the verandah with moles each 4dm by 3 dm and costing rs 7 each

Answer 2

Step-by-step explanation:

blue hydrated copper sulfate crystals CuSO4. 5H2O, again a bit more tricky!

Cu = 63.5, S = 32, H = 1, O =16.

Just do this carefully in parts eg.

CuSO4 = 63.5 + 32 + (4 x 16) = 159.5 (160 if you use Cu = 64)

H2O = (2 x 1) + 16 = 18, 5 x 18 = 90.

Formula mass = 159.5 + 90 = 249.5 (250 if Cu = 64)