Lily buys and sells microwaves She buys each one for £32 and sells it for £60 She also pays £7 for the delivery of each one she sells If she sells a Microwave that is faulty then she must pay for repair and redelivery. The costs her £35 for each faulty microwave Last month 6 out of 80 microwaves that she sold were faulty This month she has orders for 133 microwaves Calculate her expected percentage profit in this months order. Show expected number of faulty microwaves expected costs income from sales and expected percentage profit.

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Step-by-step explanation:

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt