Question

Help！！！

（Algebra）

I know the answer but I want to know the process.

The correct answer is "6" times, but why???

Lakshmi is trying to throw basketballs through hoops at a fair. If a ball goes through a hoop, she receives 50p, but if it does not she has to pay 20p for the shot. After 15 shots, Lakshmi finds she has made a profit of £1.20. How many times did Lakshmi successfully throw a ball through a hoop?

Answer 1

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Let lakshmi through successfully X times . than she missed the shots (15-x) times .

A/q,

x*0.5 - (15-x)*0.2 = 1.2

0.5x - 3 + 0.2x = 1.2

0.7x = 4.2

X = 6 (Ans)

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