Question

If '-' stands for division, ${}^{\prime }{÷}^{\prime }$ stands for multiplication, '+' stands for subtraction and ${}^{\prime }{\times }^{\prime }$ for addition, then which of the following equation is correct?

• A. $20+8-7÷6\times 4=25$
• B. $20-5÷4+6\times 5=15$
• C. $20\times 5-6÷7+4=28$
• D. $20÷4-8\times 10+6=36$

Answer 1

The correct option is B $20-5÷4+6\times 5=15$

Option (1) 20+8−7÷6×4=2020+8−7÷6×4=20
20−8÷7×6+4=2020−8÷7×6+4=20
20−87×6+4=2020−87×6+4=20 (this is wrong)
option (2) 20−5÷4+6×5=1520−5÷4+6×5=15
20÷5×4−6+5=1520÷5×4−6+5=15
4×4−6+5=154×4−6+5=15
16−6+5=1516−6+5=15 (correct)