Answer:
EOQ = 35
Step-by-step explanation:
EOQ: To calculate the optimum level of quantity to be ordered so we don't mismatch the demand in order to control the cost.
Formula:

Where;
D= Annual demand per unit.
S = Cost per order.
H= Holding cost, which is calculated by Holding cost % into total units
Given Data:
D= 1000 units.
S= $150.
H= 25% * 1000 = $250
Putting the values into the formula:

EOQ = 35