Question

Yashi bought a total of 21 bulbs and bolts for 93. She bought more bolts than
bulbs. Each bulb cost 8 and each bolt cost 3. She bought more than 5 bulbs
How many bolts did she buy?​

Answer 1

Answer:

see here:

Step-by-step explanation:

Let the number of blocks be x.

Given, 2.5 * 1.5 * 2 = x * (0.5)^3    (50cm = 0.5m)

          x = (25*15*20)/125

             = 7500/125

            = 60.

The number of blocks = 60.

Answer 2

Step-by-step explanation:

Let the no.of bulbs be x

=>No. of bolts =21-x. (because total no. of bulbs and bolts =21)

Cost of each bulb= Rs. 8/- (given)

Cost of each bolt = Rs. 3/- (also given)

Therefore, 8x +3(21-x)= 93/-( bcoz total cost=93)

=>8x+63-3x = 93

=>5x=30

=>x=6

Therefore no. of bulbs=6

Thus no. of bolts =21-6=15

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