Question

40% of 180 + 20% of 150 = ? % of 340
a. 170
b. 60
c. 30
d. 20

Answer 1

Hi there!
Here's the answer:

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¶ x% of y = (x/100) × y = xy/100

¶ What % of x is to y = [(x/y) × 100]%


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¶ SOLUTION:

40% of 180 + 20% of 150
= [(40×180)/100] + [(20×150)/100]
= (4 × 18) + (2×15)
= 72 + 30
= 102.


340 ------- 100%
102 -------- ?% (say x%)

Using Cross Multiplication,
340× x = 100 × 102
=> x = (100 × 102)/340
=> x = 1020/34
=> x = 30.

This answer is in Option C.

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:)


Hope it helps

Answer 2

Answer:

C

Step-by-step explanation:

40% of 180 = 72

20% of 150 = 30

72+30 = 102

30% of 340 = 102