Optional extension The number of kits must be an integer. A school needs to buy new science kits. At

Question

Optional extension The number of kits must be an integer. A school needs to buy new science kits. At least 120 kits are required. Each kit contains a sensor costing $18 and a circuit board costing $27. The budget allocated for the kits is $6300.

Accepted Answer

(a) $x\ge120$ and $45x\le6300$ (b) $120\le x\le140$ (c) $140$ kits. In part (b), show the integers from 120 to 140 inclusive as separate points.

Two inequalities in a purchasing context

Two inequalities in a purchasing context

Solution:

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