Answer:
60 Pence
Explanation:
One lightbulb costs £2.30, meaning if Yasmin paid with £20, she had to have bought less than 10 lightbulbs. This means the number of lightbulbs she bought, or “x”, is less than 10.
To find out how many lightbulbs Yasmin bought, we need to divide 20 by 2.30, or 2.3.
20/2.3 ≈ 8
20 divided by 2.3 is approximately equal to 8. To find the change Yasmin received, we need to multiply 2.3 by 8 to find the actual amount she spent on the lightbulbs, and then we need to subtract that product from 20.
2.30 * 8 = 19.40
20 - 19.40 = £0.60
So, Yasmin received £0.60, or 60 Pence, in change.