9. Enrique would earn $7. 50 per hour. Option B
10. The number of girls that were at the assembly is 1390 . Option J
11. 40% of 60 is 24 . Option C
12. The simple interest is $72. 00 . Option F
13. The factory produces 1080 shoes on Tuesday. Option D
How to determine the value
9. From the information given, we have;
- He earns $420
- He works a total of 56 hours
He would earn;
= 420/ 56
= $7. 50 per hour
10. We have that;
- There are 1200 boys at the assembly
- Ratio of boys to girls is 20: 23
The number of girls at the assembly would be;
= 23/ 20 × 1200
= 1. 15 × 1200
= 1380
11. Let the number be x
40% of x = 24
40/ 100x = 24
0. 4 x = 24
Make 'x' the subject
x = 24/ 0. 4
x = 60
12. The formula for simple interest is expressed as;
Simple interest = PRT / 100
Simple interest = 300 × 4 × 6/ 100
Simple interest = 7200/ 100
Simple interest = $72. 00
13. We have that;
Monday's production = 900 shoes
Tuesday's production = 900 + 900 × 20% = 900 × 20/ 100 = 18000/ 100 = $900 + 180
= $1080
Thus, the total amount Enrique earns per hour is $7. 50 .Option B
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