In March 2018, a Belarusian company and an English company entered into a contract for the supply of complex equipment w

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In March 2018, a Belarusian company and an English company
entered into a contract for the supply of complex equipment worth
£1,000 with calculation at moving prices.
The following sliding conditions are fixed in the contract:
· 40% of material costs, 35% of labour costs, 25% of fixed price
(profit, overhead, etc.).
· the period of sliding on materials - from the 6th to the 10th
month (inclusive) before the month of delivery, on wages - from the
1st to the 7th month (inclusive) before the month of
delivery;
· Delivery date - April 2019;
· changes in indices for the period of sliding on materials: 2018:
June - 117.3; July - 119.5; August - 120.4; September - 121.2;
October - 123.1;
· changes in indices for the period of salary sliding: 2018:
September - 132.2, October - 134.5, November - 135.1, December -
136.8; 2019: January - 141.7, February - 142.9, March -
149.3.
Determine the final price to be settled between the seller and the
buyer.