Solve for p: 2p/5 - 3 = 7.
Answer and explanation
Correct answer: D. 25
- Step 1: Add 3 to both sides: 2p/5 = 10. Step 2. Multiply by 5: 2p = 50. Divide by 2: p = 25. Answer: 25. Why not the others: 20 gives 2(20)/5 - 3 = 8 - 3 = 5 != 7; 30 gives 12 - 3 = 9; 35 gives 14 - 3 = 11.
Practise more Number Operations, Proportions and Pre-algebra.
Free questions with an explanation for every one, and full timed Ghana Teacher Licensure Examination mock tests.
More Number Operations, Proportions and Pre-algebra questions
- A school received a capitation grant of GH₵ 24,000. If 3/8 was spent on teaching learning materials, how much was spent on TLMs?
- In a school of 600 students, the ratio of boys to girls is 7 : 5. How many girls are enrolled in the school?
- A teacher earns a gross monthly salary of GH₵ 3,200. If 5.5% is deducted for SSNIT pension, what is the SSNIT deduction?
- The pass rate in an annual district exam rose from 64% to 80%. What was the percentage increase in the pass rate?
- Solve for k in the proportional equation: 3 / 7 = k / 56.
- If 12 teachers can complete grading an exam cohort in 6 hours, how many hours will 9 teachers take at the same rate?