Numerical Ability - Simplification & Approximation
Simplify: (15/28 × 56/45) ÷ (25/21)
Simplify: (15/28 × 56/45) ÷ (25/21)
hard Q9 of 15
Step-by-Step Solution
Step 1: Convert division to multiplication by reciprocal
Convert ÷ to × reciprocal: (15/28 × 56/45) × (21/25).Step 2: Cancel stepwise
Cancel stepwise: 15/45 = 1/3, 56/28 = 2. So partial product = (1 × 2 × 21) / (3 × 25) = 42/75.Step 3: Simplify the result
Simplify 42/75 by 3 → 14/25 = 14/25.Final Answer:
14/25 → Option C.Quick Check:
0.5357 × 1.2444 ÷ 1.1905 ≈ 0.56 ✅
Quick Trick: Flip the divisor, cancel across factors, then simplify.
Common Mistakes:
- Missing cancellations like 56/28 or 15/45.
Master "Simplification & Approximation" in Numerical Ability
Start learning the concept with an interactive lesson.
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Numerical Ability Quizzes