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ഒരു സംഖ്യയുടെ 20% ത്തിനോട് 48 കൂട്ടിയാൽ അതേ സംഖ്യ കിട്ടും. സംഖ്യയേത് ?

A50

B52

C60

D70

Answer:

C. 60

Read Explanation:

ആ സംഖ്യ 60 ആണ്.


സമവാക്യം ഉപയോഗിച്ച്

  • കാണേണ്ട സംഖ്യയെ നമുക്ക് 'x' എന്ന് കരുതാം.

  • സംഖ്യയുടെ 20% = 0.20 × x (അല്ലെങ്കിൽ 20x100\frac{20x}{100})

ചോദ്യമനുസരിച്ച്:
20% of x+48=x20\% \text{ of } x + 48 = x
20x100+48=x\frac{20x}{100} + 48 = x

ഇനി x-ന്റെ ഭാഗങ്ങളെല്ലാം ഒരു വശത്താക്കുക:
x−20x100=48x - \frac{20x}{100} = 48
100x−20x100=48\frac{100x - 20x}{100} = 48
80x100=48\frac{80x}{100} = 48
80x=48×10080x = 48 \times 100
80x=480080x = 4800
x=480080x = \frac{4800}{80}
x=60x = 60


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